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POST Audible Codes
Beeps*
Meaning
1S + 1L
Bad memory or memory configura-
tion error
2S + 1L
No graphics card installed or graph-
ics card initialization failed.
3S + 1L
CPU configuration error or invalid
CPU detected before graphics card
initialized.
1S
CPU configuration error or invalid
CPU detected before graphics card
initialized.
2S
No floppy diskette or CD found.
3S
Flashing not ready (missing utility
or BIOS image file, etc.)
4S
Flashing operation has failed
(checksum error, corrupted image,
etc.)
5S
BIOS recovery was successful
*S = Short
L = Long
All beep sequences are followed by a 3 second pause
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 instructions.
The 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 of prompt the user to unplug the unit, wait 5 seconds, reattach the power
cord, then press the power button.
dx2290 Illustrated Parts & Service Map, MT Chassis
Recommended action
Check that the memory modules have
been installed correctly and that proper
modules are used.
For systems with a graphics card:
1. Reseat the graphics card. Power on the
system.
2. Replace the graphics card.
3. Replace the system board.
For systems with integrated graphics,
replace the system board.
1. Upgrade the BIOS to proper version.
2. Change the processor.
1. Check cable connections.
2. Run the Computer Setup utility and
ensure the device port is enabled.
1. Check the type of drive that you are
using and use the correct media type.
2. Replace the diskette or CD with a new
one.
Upgrade the BIOS to proper version.
1. Verify the correct ROM.
2. Flash the ROM if needed.
3. If an expansion board was recently
added, remove it to see if the problem
remains.
4. Clear CMOS.
5. If the message disappears, there may be
a problem with the expansion card.
Replace the system board.
No action required.
448511-002
Password Security
General Information
•
A supervisor password must be set before a user password.
•
If both the supervisor and user passwords are activated and the correct supervisor password
is entered, all read/write options can be modified.
•
If both the supervisor and user passwords are activated and the correct user password is
entered, all options that cannot be modified must be displayed as read-only.
To clear a password using system board jumpers
1. Shut down the computer and disconnect the power cord from it power source.
2. Move the CLR_PSWD jumper from pins 1 and 2 and place it on pins 2 and 3.
3. Reconnect the power cord to the power source and start the computer.
4. Shut down the computer a second time and disconnect the power cord from it power source.
5. Move the CLR_PSWD jumper from pins 2 and 3 and place it on pins 1 and 2.
6. Reconnect the power cord to the power source and start the computer.
Clearing CMOS
To clear CMOS using F10 Computer Setup
Enter F10 Computer Setup and press F5. This will reset all BIOS setup options to their default
values.
This will not update system date, system time, supervisor password, or user password.
To clear CMOS using system board jumpers
1. Shut down the computer and disconnect the power cord from it power source.
2. Move the CLR_CMOS jumper from pins 1 and 2 and place it on pins 2 and 3.
3. Wait 30 seconds before returning the jumper to its normal position.
4. Reconnect the power cord to the power source and restart the computer.
Error Conditions and Messages
Feature
Purpose
Floppy drive controller
Prevents the transfer of data to or from the
floppy drive.
Device Boot Disabling
Prevents booting from and or all of these
devices: Internal or external USB, Internal
ODD, or Internal FDD
Security Option
Prevents use of computer until password is
entered. Can apply to both initial startup and
restart.
BIOS Write Protect
Restricts ability to change ROM BIOS with-
out approval.
USB Controller
Allows you to disable or enable all USB
devices.
How It Is
Established
Setup Utilities
Setup Utilities
Setup Utilities
Setup Utilities.
Setup Utilities
page 3
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