HP Compaq dx2200 MT Service Reference Card, 1st Edition

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.
All ROM BIOS images from HP are digitally signed to ensure authenticity and minimize poten-
tial corruption. 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 system will search for
a bootable device. 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 bootable diskette, or CD containing the ROM BIOS.
3. Turn on power to the system.
4. The system will automatically flash the ROM, load the BIOS default, and then boot to the
operating system.
Security Functions
The system offers both a supervisor and a user password for system and data protection.
• When the supervisor password is established it protects the computer from unauthorized or
inadvertent re-configuration by prompting the user for a supervisor password prior to enter-
ing the Setup Utility.
• When the user password is established it prevents unauthorized users from gaining access to
the computer when the device is turned on or restarted. (The supervisor password must be
enabled before a user password can be established.)
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 the F10 key until you enter Computer Setup.
If you do not press F10 when prompted, a restart will be necessary.
3. Select Set Supervisor Password and follow the instructions on the screen.
4. Before exiting, click File > Save Changes and Exit.
Establishing a User Password:
A supervisor password must have already been set before performing this operation.
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 the F10 key until you enter Computer Setup.
If you do not press F10 when prompted, a restart will be necessary.
3. Select Set User Password and follow the instructions on the screen.
4. Before exiting, click File > Save Changes and Exit.
Changing a User or Supervisor Password:
1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down >
Restart the Computer.
2. As soon as the computer is turned on, press the F10 key until you enter Computer Setup.
If you do not press F10 when prompted, a restart will be necessary.
3. When the prompt appears, type your current password, then select the desired
Set...Password item from the F10 headings.
4. Enter the new password twice. Follow the instructions on the screen.
5. Press the enter key.
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 the Computer.
2. As soon as the computer is turned on, press the F10 key until you enter Computer Setup.
If you do not press F10 when prompted, a restart will be necessary.
3. When the prompt appears, type your current password.
4. Press the Enter key then, select either Set user or Set Supervisor Password in the F10
menu as described in the previous section.
5. When the prompt appears, press the Enter key twice. A message will appear advising
you that the password has been disabled.
Clearing CMOS and All Passwords
This procedure
1. Shut down the system and disconnect the power cord from the power outlet.
2. Remove the chassis access panel.
3. On the system board, move the CMOS jumper from pins 2-3 to pins 1-2
4. Allow the jumper to remain in that position for at least 5 seconds then, return the jumper
to pins 2-3.
5. Replace the chassis access panel and reconnect the power cord.
6. Turn on the computer and allow it to start.
Security Features
NOTE:
For more information about Setup Utilities refer to the Computer Setup Menu on the previous
page or in the Service Reference Guide.
Diagnostic Functions
The following diagnostic functions are provided by the F10 Computer Setup Utility in the sys-
tem ROM.
• Processor type and speed
• Memory amount, mapping, and integrity
• Hardware peripheral availability/settings
• Hard drive type, space used/available
• System identification, asset tracking
Error Conditions and Messages
NOTE:
* Repeated after 2 second pause
Feature Purpose
How It Is
Established
Floppy drive con-
troller
Prevents the transfer of data to or from the
floppy drive.
Setup Utilities
Device Boot Dis-
abling
Prevents booting from and or all of these
devices: Internal or external USB, Internal
ODD, or Internal FDD
Setup Utilities
Security Option Prevents use of computer until password is
entered. Can apply to both initial startup
and restart.
Setup Utilities
BIOS Write Pro-
tect
Restricts ability to change ROM BIOS
without approval.
Setup Utilities.
USB Controller Allows you to disable or enable all USB
devices.
Setup Utilities
Chassis Diagnostic LEDs
Power LED Event
Steady green System on (normal operation)
Off (clear) Computer off
Blinks green @ 0.5 Hz Suspend to RAM (some models)
Blinks green @ 0.5 Hz Normal Suspend
Blinks green @ 0.25 Hz System overheating
Blinks green 5 times @ 1 Hz * Memory not seated/installed
Blinks green 6 times @ 1 Hz * Graphics card error
Blinks green 8 times @ 1 Hz* Invalid ROM
Common POST Error Messages
Screen Message Probable Cause Recommended Action
Parity Error Fatal memory parity error.
System halts after
displaying this message.
Reseat memory modules.
Replace memory modules
... Master/... Slave
Hard Disk Error
(Primary/Secondary)
Master/Slave hard drive
could not be initialized by
the BIOS.
Reseat the device data and power
cables.
Replace the device data cable.
Replace the device.
Replace the system board.
...Master/Slave
Drive — ATAPI
Incompatible
Device configured as a
(Primary/Secondary)
Master/Slave failed an
ATAPI compatibility test.
Replace the device.
Replace the system board.
SMART capable
but Command
Failed.
SMART
Command Failed
BIOS unable to send a
SMART message to the
device.
Backup the data on the hard drive.
Replace the hard drive.
SMART status
Bad, Backup and
replace.
SMART Capable
and Status Bad.
SMART capable hard drive
detects an imminent failure.
Backup the data on the hard drive.
Replace the hard drive.
DMA-1 Error
DMA-2 Error
DMA Controller
Error
Error when initializing the
DMA controller.
Reconnect the cables on the
peripheral device.
Replace the data cable.
Replace the device.
Replace the system board.
Checking
NVRAM...Update
Failed
BIOS could not write to the
NVRAM block.
Change system board jumper JP2 to
pins 2-3, then flash the system
BIOS. Reset jumpers to 1-2.
Replace the system board.
NVRAM Ignored
or NVRAM Bad
NVRAM data used to store
plug and play data was not
used for system
configuration in POST.
Restart computer, access Computer
Setup. Select Load Default
Settings > Save and Exit.
Change system board jumper JP2 to
pins 2-3, then flash the BIOS. Reset
jumpers to 1-2.
NVRAM
Checksum Bad,
NVRAM Cleared
Error detected while
validating NVRAM data.
Restart the computer, use the F10
Key to access Computer Setup,
Select Load Default Settings >
Save and Exit.
Microcode Error BIOS could not find or load
CPU microcode to update
the CPU.
Ensure the system board BIOS
supports the processor.
Change system board jumper JP2 to
pins 2-3, then flash the BIOS. Reset
jumpers to 1-2.