Lenovo 11CC0002UK User Manual
Lenovo V55t-15API
User Guide
Read this first
Before using this documentation and the product it supports, ensure that you read and understand the
following:
• Appendix A “Important safety information” on page 79
• Safety and Warranty Guide
• Setup Guide
First Edition (October 2019)
© Copyright Lenovo 2019.
LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant to a General Services
Administration “GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS35F-05925.
Contents
About this documentation . . . . . . . . iii
Chapter 1. Meet your computer. . . . . 1
Front . . . . . . . . . . . . . . . . . . . . 1
Rear . . . . . . . . . . . . . . . . . . . . 3
System board . . . . . . . . . . . . . . . . 5
Features and specifications . . . . . . . . . . . 6
Statement on USB transfer rate . . . . . . . . 7
Chapter 2. Get started with your
computer . . . . . . . . . . . . . . . . . 9
Get started with Windows 10 . . . . . . . . . . 9
Windows account . . . . . . . . . . . . . 9
Windows user interface . . . . . . . . . . 10
Connect to networks. . . . . . . . . . . . . 11
Connect to the wired Ethernet . . . . . . . 11
Connect to Wi-Fi networks (for selected
models) . . . . . . . . . . . . . . . . 11
Use Lenovo Vantage . . . . . . . . . . . . . 11
Use audio . . . . . . . . . . . . . . . . . 12
Chapter 3. Explore your computer . . 13
Manage power . . . . . . . . . . . . . . . 13
Set power button behaviors . . . . . . . . 13
Set the power plan . . . . . . . . . . . . 13
Transfer data . . . . . . . . . . . . . . . . 13
Connect to a Bluetooth-enabled device (for
selected models) . . . . . . . . . . . . 13
Use the optical drive . . . . . . . . . . . 14
Use a media card (for selected models). . . . 14
Purchase accessories . . . . . . . . . . . . 15
Chapter 4. Secure your computer
and information . . . . . . . . . . . . 17
Lock the computer . . . . . . . . . . . . . 17
Log in to your computer securely . . . . . . . . 18
Use passwords . . . . . . . . . . . . . 18
Use software security solutions. . . . . . . . . 19
Use firewalls . . . . . . . . . . . . . . 19
Use antivirus programs . . . . . . . . . . 20
Use computrace Agent software embedded in
firmware (for selected models) . . . . . . . 20
Use BIOS security solutions . . . . . . . . . . 20
Erase all storage drive data . . . . . . . . 20
Use the cover presence switch . . . . . . . 20
Use Smart USB Protection. . . . . . . . . 21
Chapter 5. UEFI BIOS . . . . . . . . . 23
What is UEFI BIOS. . . . . . . . . . . . . . 23
Enter the BIOS menu. . . . . . . . . . . . . 23
Navigate in the BIOS interface . . . . . . . . . 23
Change the display language of UEFI BIOS . . . . 23
Set the system date and time . . . . . . . . . 24
Change the startup sequence . . . . . . . . . 24
Enable or disable the configuration change
detection feature . . . . . . . . . . . . . . 24
Enable or disable the automatic power-on
feature . . . . . . . . . . . . . . . . . . 25
Enable or disable the smart power-on feature . . . 25
Enable or disable the ErP LPS compliance mode . . 25
Enable or disable the ICE thermal alert feature . . . 26
Change the ICE performance mode . . . . . . . 26
Change BIOS settings before installing a new
operating system . . . . . . . . . . . . . . 26
Update UEFI BIOS. . . . . . . . . . . . . . 27
Recover from a BIOS update failure . . . . . . . 27
Clear CMOS . . . . . . . . . . . . . . . . 28
Chapter 6. Troubleshooting,
diagnostics, and recovery . . . . . . . 29
Basic procedure for resolving computer
problems . . . . . . . . . . . . . . . . . 29
Troubleshooting . . . . . . . . . . . . . . 29
Startup problems . . . . . . . . . . . . 30
Audio problems . . . . . . . . . . . . . 31
Network problems . . . . . . . . . . . . 32
Performance problems . . . . . . . . . . 34
Storage drive problems . . . . . . . . . . 35
CD or DVD problems . . . . . . . . . . . 35
Serial connector problems. . . . . . . . . 36
USB device problems . . . . . . . . . . 36
Software problems. . . . . . . . . . . . 37
Diagnostics . . . . . . . . . . . . . . . . 37
Lenovo diagnostic tools. . . . . . . . . . 37
Recovery . . . . . . . . . . . . . . . . . 37
Restore system files and settings to an earlier
point . . . . . . . . . . . . . . . . . 37
Restore your files from a backup . . . . . . 37
Reset your computer . . . . . . . . . . . 37
Use advanced options . . . . . . . . . . 38
Windows automatic recovery. . . . . . . . 38
Create and use a recovery USB device . . . . 38
Update the device driver . . . . . . . . . 39
Chapter 7. CRU replacement . . . . . 41
What are CRUs . . . . . . . . . . . . . . . 41
© Copyright Lenovo 2019 i
Replace a CRU . . . . . . . . . . . . . . . 42
Computer cover . . . . . . . . . . . . . 42
Front bezel . . . . . . . . . . . . . . . 43
Optical drive (for selected models). . . . . . 45
Optical drive bracket (for selected models) . . 47
Drive bay assembly . . . . . . . . . . . 49
3.5-inch Storage drive . . . . . . . . . . 50
2.5-inch Storage drive . . . . . . . . . . 53
Memory module . . . . . . . . . . . . . 54
Heat sink and fan assembly . . . . . . . . 57
Coin-cell battery. . . . . . . . . . . . . 58
PCI Express card . . . . . . . . . . . . 60
Wi-Fi card . . . . . . . . . . . . . . . 61
M.2 solid-state drive . . . . . . . . . . . 65
M.2 solid-state drive bracket . . . . . . . . 70
Power supply assembly . . . . . . . . . . 71
Call Lenovo . . . . . . . . . . . . . . . . 76
Before you contact Lenovo . . . . . . . . 76
Lenovo Customer Support Center . . . . . . 76
Purchase additional services. . . . . . . . . . 77
Appendix A. Important safety
information . . . . . . . . . . . . . . . 79
Appendix B. Accessibility and
ergonomic information . . . . . . . . 93
Appendix C. Supplemental
information about the Ubuntu operating
system . . . . . . . . . . . . . . . . . 97
Appendix D. Compliance
information . . . . . . . . . . . . . . . 99
Chapter 8. Help and support . . . . . 75
Self-help resources . . . . . . . . . . . . . 75
Appendix E. Notices and
trademarks . . . . . . . . . . . . . . . 111
ii Lenovo V55t-15API User Guide
About this documentation
• Illustrations in this documentation might look different from your product.
• Depending on the model, some optional accessories, features, and software programs might not be
available on your computer.
• Depending on the version of operating systems and programs, some user interface instructions might not
be applicable to your computer.
• Documentation content is subject to change without notice. Lenovo makes constant improvements on the
documentation of your computer, including this User Guide. To get the latest documentation, go to:
https://support.lenovo.com
• Microsoft® makes periodic feature changes to the Windows® operating system through Windows Update.
As a result, some information in this documentation might become outdated. Refer to Microsoft resources
for the latest information.
© Copyright Lenovo 2019 iii
iv Lenovo V55t-15API User Guide
Chapter 1. Meet your computer
Front
1. Optical drive eject button*
2. Optical drive status indicator* This indicator is on when the optical drive is in use.
3. Card reader slot*
4. Power indicator
5. Power button
6. Microphone connector
7. Headphone connector Used to connect headphones to your computer.
8. USB 3.1 connectors Gen 1 (2)
© Copyright Lenovo 2019 1
Used to eject the tray of the optical drive. After you insert a disc into the tray, push
the tray backward to close it.
Used to read data from a supported memory card.
This indicator is on when the computer is on.
Used to turn on your computer. When you cannot shut down the computer from
the operating system, press and hold the power button for four or more seconds
to turn off the computer.
Used to connect a microphone to your computer. You can use the microphone to
record sounds or interact with the computer using speech-recognition software.
Used to connect a USB-compatible device, such as a USB keyboard, USB
mouse, USB storage device, or USB printer.
9. USB 2.0 connectors (2) Used to connect a device that requires a USB 2.0 connection.
10. Storage drive status indicator This indicator is on when the storage drive is in use.
* for selected models
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Rear
1. Microphone connector
2. HDMI
3. VGA out connector
4. USB 2.0 connectors (2) Used to connect a device that requires a USB 2.0 connection.
5. Audio line-out connector
™
1.4 out connector
Used to connect a microphone to your computer when you want to record sound
or use speech recognition software.
Used to send audio and video signals from the computer to another audio or
video device, such as a high-performance monitor.
Used to send video signals from the computer to another video device, such as a
monitor.
Used to send audio signals from the computer to external devices, such as
powered stereo speakers, headphones, or multimedia keyboards. To connect a
stereo system or other external recording device, connect a cable between the
audio line-in connector of the device and the audio line-out connector of the
computer.
Note: If your computer has both an audio line-out connector and a headset or
headphone connector, always use the headset connector or headphone
connector for earphones, headphones, or a headset. The headphone connector
does not support headset microphones.
Chapter 1. Meet your computer 3
Used to receive audio signals from an external audio device, such as a stereo
6. Audio line-in connector
7. Ethernet connector Used to connect an Ethernet cable for network access.
8. Cable lock slots (2)
9. PCI-Express card area
10. Padlock loop Used to secure a padlock.
11. Security-lock slot Used to secure a Kensington-style cable lock.
system. To attach an external audio device, connect a cable between the audio
line-out connector of the device and the audio line-in connector of the computer.
Used to secure a cable lock.
To improve the operating performance of the computer, you can connect PCIExpress cards into this area. Depending on the computer model, the connectors
in this area vary.
12. Power cord connector
Used to connect the power cord to your computer for power supply.
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System board
1 4-pin power connector
3 Coin-cell battery
5 Power button board connector
7 Auxiliary fan connector 1
9 M.2 solid-state drive slot
11 SATA power connector
13 Parallel connector
2 Microprocessor fan connector
4 Buzzer
6 Front USB 2.0 connector (Card reader connector)
8 10-pin power connector
10 SATA 3.0 connectors (2)
12 Thermal sensor connector
14 Cover presence switch connector (Intrusion switch
connector)
15 M.2 Wi-Fi card slot
17 PCI Express x16 graphics card slot 18 System fan connector
19 Microprocessor socket
21 Memory slot (DIMM2)
16 PCI Express x1 card slot
20 Memory slot (DIMM1)
Chapter 1. Meet your computer 5
Features and specifications
• Width: 145.0 mm (5.7 inches)
Dimensions
Weight (without the package) Maximum configuration as shipped: 6.9 kg (15.1 lb)
Hardware configuration
Power supply 180-watt automatic voltage-sensing power supply
Storage device
Video features
Audio features
• Height: 366.0 mm (14.4 inches)
• Depth: 293.2 mm (11.5 inches)
1. Right-click the Start button to open the Start context menu.
2. Click Device Manager. Type the administrator password or provide
confirmation if prompted.
• 3.5-inch storage drive
• 2.5-inch storage drive
• M.2 solid-state drive
The integrated graphics card supports the following:
• HDMI 1.4 out connector
• VGA-out connector
• The integrated audio card supports the following:
– Audio line-in connector
– Audio line-out connector
– Headphone connector
– Microphone connector
• The optional discrete audio card provides an enhanced audio experience and
extended capabilities.
Input/Output (I/O) features
Expansion
Network features
* for selected models
• Audio connectors (audio line-in, audio line-out, headphone, and microphone)
• Card reader slot*
• Display connectors (HDMI 1.4 out and VGA-out)
• Ethernet connector
• Serial connector
• USB connector
• Card reader*
• Memory slot
• Optical drive*
• PCI Express x1 card slot
• PCI Express x16 graphics card slot
• Storage drive bay
• Bluetooth*
• Ethernet LAN
• Wireless LAN*
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Lenovo V55t-15API User Guide
Statement on USB transfer rate
Depending on many factors such as the processing capability of the host and peripheral devices, file
attributes, and other factors related to system configuration and operating environments, the actual transfer
rate using the various USB connectors on this device will vary and will be slower than the data rate listed
below for each corresponding device.
USB device Data rate (Gbit/s)
3.1 Gen 1
3.1 Gen 2
3.2 20
5
10
Chapter 1. Meet your computer 7
8 Lenovo V55t-15API User Guide
Chapter 2. Get started with your computer
Get started with Windows 10
Learn the basics of Windows 10 and start working with it right away. For more information about Windows
10, see the Windows help information.
Windows account
A user account is required to use the Windows operating system. It can either be a Windows user account or
a Microsoft account.
Windows user account
When you start Windows for the first time, you are prompted to create a Windows user account. This first
account you created is of the “Administrator” type. With an Administrator account, you can create additional
user accounts or change account types by doing the following:
1. Open the Start menu and select Settings ➙ Accounts ➙ Family & other users.
2. Follow the on-screen instructions.
Microsoft account
You can also log in to the Windows operating system with a Microsoft account.
To create a Microsoft account, go to the Microsoft sign-up page at
screen instructions.
With a Microsoft account, you can:
• Enjoy one-time signing in if you are using other Microsoft services, such as OneDrive, Skype, and Outlook.
com.
• Sync personalized settings across other Windows-based devices.
https://signup.live.com and follow the on-
© Copyright Lenovo 2019 9
Windows user interface
1. Account
2. Documents
3. Pictures
4. Settings
5. Power
6. Start button
7. Windows Search
8. Task View
9. Windows notification area
10. Battery status icon
11. Network icon
12. Action center
Change account settings, lock the computer, or sign out from the current account.
Open the Documents folder, a default folder to save your received files.
Open the Pictures folder, a default folder to save your received pictures.
Launch Settings.
Shut down, restart, or put the computer into sleep mode.
Open the Start menu.
Type what you are looking for in the search box and get search results from your
computer and the Web.
Display all opened apps and switch among them.
Display notifications and status of some features.
Display power status and change battery or power settings. When your computer
is not connected to ac power, the icon changes to
Connect to an available wireless network and display the network status. When
connected to a wired network, the icon changes to
Display the latest notifications from apps and provide quick access to some
features.
Open the Start menu
• Click the Start button.
• Press the Windows logo key on the keyboard.
.
.
Open the Start context menu
Right-click the Start button.
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Lenovo V55t-15API User Guide
Access Control Panel
• Open the Start menu and click Windows System ➙ Control Panel.
• Use Windows Search.
Launch an app
• Open the Start menu and select the app you want to launch.
• Use Windows Search.
Connect to networks
Your computer helps you connect to the world through a wired or wireless network.
Connect to the wired Ethernet
Connect your computer to a local network through the Ethernet connector on your computer with an
Ethernet cable.
Connect to Wi-Fi networks (for selected models)
1. Click the network icon in the Windows notification area. A list of available wireless networks is displayed.
2. Select a network available for connection. Provide required information, if needed.
Use Lenovo Vantage
The preinstalled Lenovo Vantage is a customized one-stop solution to help you maintain your computer with
automated updates and fixes, configure hardware settings, and get personalized support.
Access Lenovo Vantage
Open the Start menu and click Lenovo Vantage. You also can type Lenovo Vantage in the search box.
To download the latest version of Lenovo Vantage, go to Microsoft Store and search by the app name.
Key features
Lenovo vantage enables you to:
• Know the device status easily and customize device settings.
• Download and install UEFI BIOS, firmware and driver updates to keep your computer up-to-date.
• Monitor your computer health, and secure your computer against outside threats.
• Look up warranty status (online).
• Access User Guide and helpful articles.
Notes:
• The available features vary depending on the computer model.
• Lenovo Vantage makes periodic updates of the features to keep improving your experience with your
computer. The description of features might be different from that on your actual user interface.
Chapter 2. Get started with your computer 11
Use audio
To enhance the audio experience, connect speakers, headphones, or a headset to the audio connector.
Adjust the volume
1. Click the volume icon in the Windows notification area on the taskbar.
2. Follow the on-screen instructions to adjust the volume. Click the speaker icon to mute the audio.
Change the sound settings
1. Go to Control Panel and view by category.
2. Click Hardware and Sound ➙ Sound.
3. Change the settings as you prefer.
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Lenovo V55t-15API User Guide
Chapter 3. Explore your computer
Manage power
Use the information in this section to achieve the best balance between performance and power efficiency.
Set power button behaviors
You can define what the power button does according to your preference. For example, by pressing the
power button, you can turn off the computer or put the computer to sleep or hibernation mode.
To change what the power button does:
1. Go to Control Panel and view by large icons or small icons.
2. Click Power Options ➙ Choose what the power buttons do.
3. Change the settings as you prefer.
Set the power plan
For ENERGY STAR® compliant computers, the following power plan takes effect when your computers have
been idle for a specified duration:
Table 1. Default power plan (when plugged into ac power)
• Turn off the display: After 10 minutes
• Put the computer to sleep: After 25 minutes
To awaken the computer from Sleep mode, press any key on your keyboard.
To reset the power plan to achieve the best balance between performance and power saving:
1. Go to Control Panel and view by large icons or small icons.
2. Click Power Options, and then choose or customize a power plan of your preference.
Transfer data
Quickly share your files using the built-in Bluetooth technology among devices with the same features. You
also can install a disc or media card to transfer data.
Connect to a Bluetooth-enabled device (for selected models)
You can connect all types of Bluetooth-enabled devices to your computer, such as a keyboard, a mouse, a
smartphone, or speakers. To ensure that the connection is successful, place the devices 10 meters (33 feet),
at most, from the computer.
1. Turn on Bluetooth on the computer.
a. Open the Start menu, and then click Settings ➙ Devices ➙ Bluetooth & other devices.
b. Turn on the Bluetooth switch.
2. Click Add Bluetooth or other device ➙ Bluetooth.
3. Select a Bluetooth device, and then follow the on-screen instructions.
© Copyright Lenovo 2019 13
Your Bluetooth device and computer will automatically connect the next time if the two devices are in range
of each other with Bluetooth turned on. You can use Bluetooth for data transfer or remote control and
communication.
Use the optical drive
If your computer has an optical drive, read the following information.
Know the type of your optical drive
1. Right-click the Start button to open the Start context menu.
2. Click Device Manager. Type the administrator password or provide confirmation if prompted.
Install or remove a disc
1. With the computer on, press the eject/close button on the optical drive. The tray slides out of the drive.
2. Insert a disc into the tray or remove a disc from the tray, and then press the eject/close button again to
close the tray.
Note: If the tray does not slide out of the drive when you press the eject/close button, turn off the computer.
Then, insert a straightened paper clip into the emergency-eject hole adjacent to the eject/close button. Use
the emergency eject only in an emergency.
Record a disc
1. Insert a recordable disc into the optical drive that supports recording.
2. Do one of the following:
• Open the Start menu, and then click Settings ➙ Devices ➙ AutoPlay. Select or turn on Use
AutoPlay for all media and devices.
• Open Windows Media Player.
• Double-click the ISO file.
3. Follow the on-screen instructions.
Use a media card (for selected models)
If your computer has a SD-card slot, read the following information.
Install a media card
1. Locate the SD-card slot.
2. Ensure that the metal contacts on the card are facing the ones in the SD-card slot. Insert the card firmly
into the SD-card slot until it is secured in place.
Remove a media card
Attention: Before removing a media card, eject the card from the Windows operating system first.
Otherwise, data on the card might get corrupted or lost.
1. Click the triangular icon in the Windows notification area to show hidden icons. Then, right-click the
Safely Remove Hardware and Eject Media icon.
2. Select the corresponding item to eject the card from the Windows operating system.
3. Press the card and remove it from your computer. Store the card safely for future use.
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Lenovo V55t-15API User Guide
Purchase accessories
Lenovo has a number of hardware accessories and upgrades to help expand the capabilities of your
computer. Options include memory modules, storage devices, network cards, power adapters, keyboards,
mice, and more.
To shop at Lenovo, go to
https://www.lenovo.com/accessories.
Chapter 3. Explore your computer 15
16 Lenovo V55t-15API User Guide
Chapter 4. Secure your computer and information
Lock the computer
Note: You are responsible for evaluating, selecting, and implementing the locking device and security
feature. Lenovo makes no comments, judgments, or warranties about the function, quality, or performance
of the locking device and security feature. You can purchase computer locks from Lenovo.
Padlock
Lock the computer cover through a padlock prevents unauthorized access to the inside of your computer.
Kensington-style cable lock
Lock your computer to a desk, table, or other fixtures through a Kensington-style cable lock.
© Copyright Lenovo 2019 17
Cable lock
Secure devices, such as the keyboard and the mouse, by locking the device cables to the computer. The
cable lock connects to the cable-lock slots on the rear of the computer. To install a cable lock:
1. Insert the clip
2. Guide the cables you want to lock into the grooves of the cable lock.
3. Press the clip
1 into the cable-lock slot 4 .
2 into the cable-lock slot 3 until it snaps into position.
Log in to your computer securely
This section provides secure ways to log in to your computer with a password, a fingerprint, or your face.
Use passwords
Password types
You can set the following passwords in UEFI (Unified Extensible Firmware Interface) BIOS (Basic Input/
Output System) to prevent unauthorized access to your computer. However, you are not prompted to enter
any UEFI BIOS password when your computer resumes from sleep mode.
• Power-on password
When a power-on password is set, you are prompted to enter a valid password each time the computer is
turned on. The computer cannot be used until the valid password is entered.
• Supervisor password
Setting a supervisor password deters unauthorized users from changing configuration settings. If you are
responsible for maintaining the configuration settings of several computers, you might want to set a
supervisor password.
When a supervisor password is set, you are prompted to enter a valid password each time you try to enter
the BIOS menu.
If both the power-on password and supervisor password are set, you can enter either password.
However, you must use your supervisor password to change any configuration settings.
• Hard disk password
Setting a hard disk password prevents unauthorized access to the data on the storage drive. When a hard
disk password is set, you are prompted to enter a valid password each time you try to access the storage
drive.
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Lenovo V55t-15API User Guide
Note: After you set a hard disk password, your data on the storage drive is protected even if the storage
drive is removed from one computer and installed in another.
• System management password (for selected models)
You can enable the system management password to have the same authority as the supervisor
password to control security related features. To customize the authority of the system management
password through the UEFI BIOS menu:
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. Select Security ➙ System Management Password Access Control.
3. Follow the on-screen instructions.
If you have set both the supervisor password and the system management password, the supervisor
password overrides the system management password.
Set, change, and remove a password
Before you start, print these instructions.
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. Select Security.
3. Depending on the password type, select Set Supervisor Password, Set Power-On Password, Set
System Management Password, or Hard Disk Password and press Enter.
4. Follow the on-screen instructions to set, change, or remove a password.
5. Press F10 or Fn+F10 to save the changes and exit.
You should record your passwords and store them in a safe place. If you forget the passwords, see “Clear
CMOS” on page 28 to remove them by yourself. You can also contact a Lenovo-authorized service provider
to have the passwords removed.
Notes:
• If the supervisor password is forgotten, it might not be removed by clearing CMOS depending on your
BIOS settings.
• If the hard disk password is forgotten, Lenovo cannot remove the password or recover data from the
storage drive.
Use software security solutions
This section provides software solutions to secure your computer and information.
Use firewalls
A firewall can be hardware, software, or a combination of both depending on the level of security required.
Firewalls work on a set of rules to determine which inbound and outbound connections are authorized. If the
computer is preinstalled with a firewall program, it helps protect against computer Internet security threats,
unauthorized access, intrusions, and Internet attacks. It also protects your privacy. For more information
about how to use the firewall program, refer to the help system of your firewall program.
To use firewalls:
1. Go to Control Panel and view by large icons or small icons.
2. Click Windows Defender Firewall, and then follow the on-screen instructions.
Chapter 4. Secure your computer and information 19
Use antivirus programs
The computer is preinstalled with an antivirus program to help you guard against, detect, and eliminate
viruses.
Lenovo provides a full version of antivirus software on the computer with a free 30-day subscription. After 30
days, you must renew the license to continue receiving the antivirus software updates.
Note: Virus definition files must be kept up-to-date to guard against new viruses.
For more information about how to use your antivirus software, refer to the help system of your antivirus
software.
Use computrace Agent software embedded in firmware (for selected models)
The Computrace Agent software is an IT asset management and computer theft recovery solution. The
software detects if changes have been made on the computer, such as hardware, software, or the computer
call-in location. You might have to purchase a subscription to activate the Computrace Agent software.
Use BIOS security solutions
This section provides BIOS solutions to secure your computer and information.
Erase all storage drive data
It is recommended that you erase all storage drive data before recycling a storage drive or the computer.
To erase all storage drive data:
1. Set a hard disk password for the storage drive you will recycle. See “Use passwords” on page 18.
2. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
3. Select Security ➙ Hard Disk Password ➙ Security Erase HDD Data and press Enter.
4. Select the storage drive you will recycle and press Enter.
5. A message is displayed, prompting you to confirm the operation. Select Yes and press Enter. The
erasing process begins.
Note: During the erasing process, the power button and the keyboard are disabled.
6. After the erasing process is completed, a message is displayed, prompting you to reset the system.
Select Continue.
Note: Depending on the storage drive capacity, the erasing process will take half an hour to three hours.
7. After the resetting process is completed, one of the following will happen:
• If the data on the system storage drive is erased, you will be prompted that no operating system is
available.
• If the data on the non-system storage drive is erased, the computer restarts automatically.
Use the cover presence switch
The cover presence switch prevents the computer from logging in to the operating system when the
computer cover is not properly installed or closed.
To enable the cover presence switch connector on the system board:
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
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Lenovo V55t-15API User Guide
2. Select Security ➙ Cover Tamper Detected and press Enter.
3. Select Enabled and press Enter.
4. Press F10 or Fn+F10 to save the changes and exit.
When the cover presence switch connector on the system board is enabled, if the cover presence switch
detects that the computer cover is not correctly installed or closed, an error message will be displayed when
you turn on the computer. To bypass the error message and log in to the operating system:
1. Properly install or close the computer cover.
2. Enter the BIOS menu, save and then exit.
Use Smart USB Protection
The Smart USB Protection function is a security function that helps prevent data from being copied from the
computer to USB storage devices connected to the computer. You can set the Smart USB Protection
function to one of the following modes:
• Disabled (default setting): You can use the USB storage devices without limitation.
• Read Only: You cannot copy data from the computer to the USB storage devices. However, you can
access or modify data on the USB storage devices.
• No Access: You cannot access the USB storage devices from the computer.
To configure the Smart USB Protection function:
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. Select Security ➙ Smart USB Protection and press Enter.
3. Select the desired setting and press Enter.
4. Press F10 or Fn+F10 to save the changes and exit.
Chapter 4. Secure your computer and information 21
22 Lenovo V55t-15API User Guide
Chapter 5. UEFI BIOS
This chapter provides information about configuring and updating UEFI BIOS, and clearing CMOS.
What is UEFI BIOS
Note: The operating system settings might override any similar settings in UEFI BIOS.
UEFI BIOS is the first program that the computer runs when the computer is turned on. UEFI BIOS initializes
the hardware components and loads the operating system and other programs. Your computer comes with a
setup program with which you can change UEFI BIOS settings.
Enter the BIOS menu
Restart the computer. When the logo screen is displayed, press F1 or Fn+F1 to enter the BIOS menu.
Note: If you have set BIOS passwords, enter the correct passwords when prompted. You also can press
Enter to skip the password prompt and enter the BIOS menu. However, you cannot change the system
configurations that are protected by passwords.
Navigate in the BIOS interface
Attention: The default configurations are already optimized for you in boldface. Improper change of the
configurations might cause unexpected results.
Depending on your keyboard, you can navigate in the BIOS interface by pressing the following keys, or
combinations of Fn and the following keys:
F1 or Fn+F1
Esc or Fn+Esc Exit the submenu and return to the parent menu.
↑↓ or Fn+↑↓ Locate an item.
← → or Fn+← → Select a tab.
+/– or Fn++/– Change to a higher or lower value.
Enter Enter the selected tab or submenu.
F9 or Fn+F9 Restore to the default settings.
F10 or Fn+F10 Save your configuration and exit.
Display the General Help screen.
Change the display language of UEFI BIOS
UEFI BIOS supports three display languages: English, French, and simplified Chinese.
To change the display language of UEFI BIOS:
1. Select Main ➙ Language and press Enter.
2. Set the display language as desired.
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Set the system date and time
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. Select Main ➙ System Time & Date and press Enter.
3. Set the system date and time as desired.
4. Press F10 or Fn+F10 to save the changes and exit.
Change the startup sequence
If the computer does not start up from a device as expected, you can change the startup device sequence
permanently or select a temporary startup device.
Change the startup device sequence permanently
1. Depending on the type of the storage device, do one of the following:
• If the storage device is internal, go to step 2.
• If the storage device is a disc, ensure that the computer is on or turn on the computer. Then, insert
the disc into the optical drive.
• If the storage device is an external device other than a disc, connect the storage device to the
computer.
2. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
3. Select Startup, and then follow the on-screen instructions to change the startup sequence.
4. Press F10 or Fn+F10 to save the changes and exit.
Select a temporary startup device
Note: Not all discs and storage drives are bootable.
1. Depending on the type of the storage device, do one of the following:
• If the storage device is internal, go to step 2.
• If the storage device is a disc, ensure that the computer is on or turn on the computer. Then, insert
the disc into the optical drive.
• If the storage device is an external device other than a disc, connect the storage device to the
computer.
2. Restart the computer. When the logo screen is displayed, press F12 or Fn+F12.
3. Select the storage device as desired and press Enter.
If you want to change the startup device sequence permanently, select Enter Setup on Startup Device Menu
and press Enter to enter the BIOS menu.
Enable or disable the configuration change detection feature
If you enable configuration change detection, when the POST detects configuration changes of some
hardware devices (such as storage drives or memory modules), an error message will be displayed when you
turn on the computer.
To enable or disable the configuration change detection feature:
1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.
2. Select Security ➙ Configuration Change Detection and press Enter.
3. Enable or disable the feature as desired.
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Lenovo V55t-15API User Guide
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