Basic system information regarding system information, setup, power management, hardware,
and passwords is maintained in the Setup Utility held in the system ROM. The Setup Utility is
accessed by pressing the F10 key when prompted (on screen) to do so during the boot sequence.
If the screen prompt opportunity is missed, a restart will be necessary.
Computer Setup Menu
HeadingOption / Description
System
Information
MainDate
AdvancedExecute Dis-
Lists the following main system specifications:
• Product Name
• SKU Number
• Processor Type
• Processor Speed
• System ROM
• Cache Size
(mm/dd/yyyy)
Time
(hh/mm/ss)
SATA Port 1,
2, 3, and 4
Onboard FDC
Controller
Drive A Allows you to set to None or 1.4M, 3.5 in.
Halt OnAllows you to set POST error behavior to: all errors, no
POST Delay Allows you to set POST delay to 0, 5, 10, 15, or 30 seconds
able Bit
MAX DVMT
Allocation
Init Display
First
Onboard HD
Audio
OnChip USB
Controller
USB Legacy
Support
Onboard LAN Disable/enable
Onboard LAN
Boot ROM
Onboard
Serial Port 1
or 2
Onboard Parallel Port
Allows you to set system date.
Allows you to set system time.
Allows you to run HDD self-tests, auto detect HDD size and
head, set extended IDE drive details, set access mode, and
view information about the device(s)
Disable/enable
errors, all but keyboard, all but diskette, or all but diskette/
keyboard.
Disable/enable hardware DEP function.
Specify size of DVMT/system memory to allocate for video
memory. Settings: 64MB, 128MB, 224 MB.
Allows you to set primary display device to PCI slot, OnChip
VGA, or PCIEx.
Disable/enable
Disable/enable
Disable/enable (USB keyboard, mouse, and flash media).
Disable/enable
Allows you to select: Disabled, 3F8/IRQ4, 2F8/IRQ3, 3E8/
IRQ4, or 2E8/IRQ3.
Allows you to select: Disabled, 378/IRQ7, 278/IRQ5, or
3BC/IRQ7.
• Memory Size
• Integrated MAC
• UUID
• System Serial #
• Asset Tracking Number
Computer Setup Menu (Continued)
HeadingOption / Description
Advanced
(continued)
BootDevice Boot
PC HealthSystem Fan
ExitSave & Exit
System Hardware Interrupts
IRQ System FunctionIRQ System Function
0Timer Interrupt 8Real-Time Clock
1Keyboard9Unused
2Interrupt Controller Cascade10Unused, available for PCI
3Serial Port (COM B)11Unused, available for PCI
4Serial Port (COM A)12Mouse
5Unused, available for PCI13Coprocessor
6Diskette Drive14Primary ATA (IDE) Controller
7Parallel Port (LPT 1)15Secondary ATA (IDE) Controller
Parallel Port
Mode
After AC
Power Loss
Wak e on P C I
Device from
S5
RTC Al ar m
Resume
Date (of
Month)
Resume Time
(hh:mm:ss)
Disabling
F9 Boot Menu Disable/enable
F10 Setup
Prompting
F11 Recovery
Prompting
F12 Boot
from LAN
Prompting
Removable
Device Boot
Seq.
Hard Disk
Boot Priority
Optical Drive
Boot Seq.
Network Boot
Seq.
First, Second,
Third, and
Fourth Boot
Device
Set Supervisor
Password
Set User Password
Security
Option
BIOS Write
Protection
Fail Check
Smart Fan
Function
Current CPU
Temperature
Current System Temp
Current CPU
Fan Speed
Current System Fan
Speed
VcoreView only
12VView only
5VView only
VBAT (V)View only
5VSB (V)View only
Setup
Exit Without
Saving
Load Optimized defaults
Allows you to select: SPP, EPP, ECP, ECP + EPP, or Normal.
Allows you to select power loss behavior to On, Off, or Last
state.
Disable/enable
Disable/enable
If RTC Alarm is enabled, allows you to select day of month to
resumption (0 = every day).
If RTC Alarm enabled, allows you to select time to resume.
Allows you to restrict a device from booting the unit. May
disable: none, USB, Internal ODD, Internal FDD, or
USB+ODD+FDD
Disable/enable
Disable/enable
Disable/enable
Allows you to specify the order of attached removable
devices. The first drive in the order has priority and is recognized as drive A.
Allows you to specify the order of attached hard drive devices
(USB HDD, USB2 Drive Key, or USB flash media). The first
attached drive in the order has priority and is recognized as
drive C.
Allows you to specify the order in which attached optical
drives (including USB ODD) are checked for a bootable operating system image.
Allows you to specify the order in which network devices
(including UP NIC cards) are checked for a bootable operating system image.
Allows you to specify which devices will boot in which
sequence or to disable any of the four: removable, hard disk,
CDROM, network, or disabled.
Allows you to establish a password to enter Computer Setup
Allows you to establish a password to enter the computer
(must have Supervisor password established)
Allows you to set security option to Setup or System so that
the password is required each time the system boots or only
when entering Computer Setup.
Enable to prevent BIOS from being updated.
Disable/enable
Disable/enable
View only
View only
View only
View only
Allows you to save current settings and exit Computer Setup.
Allows you to exit Computer Setup without saving changes.
Allows you to reset Computer Setup to factory defaults.
dx7400 Illustrated Parts & Service Map, MT Chassis459782-001page 3
Failsafe Boot Block ROM
The computer comes with a reprogrammable flash system ROM (read only memory). To
upgrade the ROM, download the latest ROM BIOS image from the HP Web site (www.hp.com)
and follow the online GUI/instructions.
Your system ROM includes a Failsafe Boot Block that is protected during the flash process and
allows the computer to be restarted in the unlikely event of an unsuccessful ROM flash.
If the system detects an invalid system ROM during the boot sequence, the Failsafe Boot Block
attempts to locate a valid BIOS image on removable media. To recover from the Boot Block
recovery mode complete the following steps:
Boot Block Recovery
1. Remove any bootable media from the computer and turn off power.
2. Insert a flash drive or CD containing the ROM BIOS.
3. Turn on power to the system.
4. The system will automatically flash the ROM. After a successful flash, the system will either
automatically restart or prompt the user to unplug the unit, wait 5 seconds, reattach the power
cord, and then press the power button.
Password Security
Establishing a Supervisor Password:
1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.
2. As soon as the computer is turned on, press F10 when the monitor light turns green to enter
Computer Setup. Press Enter to bypass the title screen, if necessary. If you do not press F10
when prompted, a restart will be necessary.
3. Select Boot > Setup Supervisor Password and follow the instructions on the screen.
4. Before exiting, click File > Save and Exit Setup.
Establishing a User Password:
1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.
2. As soon as the computer is turned on, press F10 when the monitor light turns green to enter
Computer Setup. Press Enter to bypass the title screen, if necessary. If you do not press F10
when prompted, a restart will be necessary.
3. Select Boot > Set User Password and follow the instructions on the screen.
Before exiting, click File > Save and Exit Setup.
Changing a Password:
1. Turn on or restart the computer. If you are in Windows, click Start> Shut Down > Restart.
2. As soon as the computer is turned on, press F10 when the monitor light turns green to enter
Computer Setup.
3. When the key icon appears, type your current password
4. Select Boot > Set Supervisor (or user) Password.
5. Enter the new password (or nothing for no password) in the key icon and press Enter
The new password will take effect the next time the computer is restarted.
Deleting a Password
1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.
2. As soon as the computer is turned on, press F10 when the monitor light turns green to enter
Computer Setup.
3. When the key icon appears, type your current password
4. Select Boot > Set Supervisor (or user) Password.
5. Enter nothing for no password in the key icon and press Enter.
The new password will take effect the next time the computer is restarted.
Clearing CMOS
1. Turn off the computer and any external devices, disconnect the power cord from the power
outlet, and remove the access panel.
2. Locate, press, and hold the CMOS button in for five seconds.
3. Replace the access panel and connect the power cord to the power outlet.
4. Turn on the computer.
Error Conditions and Messages
FeaturePurpose
Floppy drive controller Prevents the transfer of data to or from the
Device Boot Disabling Prevents booting from and or all of these
Security OptionPrevents use of computer until password is
BIOS Write ProtectRestricts ability to change ROM BIOS with-
USB ControllerAllows you to disable or enable all USB
floppy drive.
devices: Internal or external USB, Internal
ODD, or Internal FDD
entered. Can apply to both initial startup and
restart.
out approval.
devices.
How It Is
Established
Setup Utilities
Setup Utilities
Setup Utilities
Setup Utilities
Setup Utilities
Common POST Error Messages
Screen MessageProbable CauseRecommended Action
101-Option ROM Checksum Error
103-System Board
Failure
164-Memory Size Error
and
201-Memory Error
214-DIMM Configuration Warning
301-, 304-Keyboard error Keyboard failure.Check keyboard connection or
Hard drive is about to fail.1. Determine if hard drive is
are improperly attached. For
optimal performance, the
SATA 0 and SATA 1 connectors must be used before
SATA 2 and SATA 3.
Processor not supported by
ROM B IOS.
1. Verify ROM, reflash if required
2. Remove suspected card, reboot
3. Clear CMOS memory, reboot
4. Replace system board
2. Remove expansion boards.
3. Replace system board.
1. Run Setup (F10).
2. Check DIMMs for proper
seating, type, and HP
compatibility.
3. R emove DIMMs singularly and
reboot to isolate faulty DIMM.
4. Replace system board.
Rearrange the DIMMs so that
each channel has the same amount
of memory.
keys. Check connector for bent of
missing pins. Replace keyboard. If
304, possible system board problem.
2. Clear CMOS.
3. Check monitor connection.
4. Replace graphics card.
giving correct error message.
Enter Computer Setup and run
the Drive Protection System
test under Storage > DPS Self-test.
2. Apply hard drive firmware
patch if applicable.
3. Back up contents and replace
hard drive.
Ensure SATA connectors are used
in ascending order. For one
device, use SATA 0. For two
devices, use SATA 0 and SATA 1.
For three devices, use SATA 0,
SATA1, and SATA 2.
1. Upgrade BIOS to proper
version.
2. Change the processor.
Diagnostic Functions
Diagnostic functions are provided by the Setup Utility (in system ROM) and by Insight Diagnostics. Insight Diagnostics provides detailed system information including:
• Processor type and speed
• Memory amount, mapping, and integrity
• Hardware peripheral availability/settings
• Hard drive type, space used/available
• System identification, asset tracking
Insight Diagnostics may be found on the Documentation and Diagnostics CD that shipped with
the computer. The tool may also be downloaded from the hp Web site using the following procedure:
1. Go to www.hp.com
2. Click the Software and Download driver link.
3. Enter the product number (for example, dx7400) in the text box and press the Enter key.
4. Select the specific product.
5. Select the OS.
6. Click the Diagnostics link.
7. Select HP Insight Diagnostics Offline Edition.
8. Select the proper language and click Download.
Diagnostic LEDs
LEDColorLED ActivityState/Message
PowerGreenOnComputer on
PowerGreen1 blink every secondProcessor thermal protection activated,
PowerGreen2 blinks every secondSuspend to RAM (some Models)
PowerGreen5 blinks, 1 blink every second
PowerGreen6 blinks, 1 blink every second
PowerGreen8 blinks, 1 blink every second
PowerGreen8 blinks, 1 blink every second
NoneNoneSystem does not power on and
followed by 1 short beep
followed by a 1 long and 2
short beeps
followed by 2 short beeps
followed by 2 short beeps and
hurried beeps
LEDs are not flashing
fan blocked or not turning, OR
Fansink not properly attached
Pre-video memory error
Pre-video graphics error
Invalid ROM with diskette drive
Invalid ROM without diskette drive
System unable to power on
dx7400 Illustrated Parts & Service Map, MT Chassis459782-001page 4
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