HP dc7700 - Convertible Minitower PC Troubleshooting Manual page 62

Table A-1 Numeric Codes and Text Messages (continued)
Control panel message
2204-Inventory error during MEBx execution BIOS information passed to the MEBx
2205-Interface error during MEBx execution
Invalid Electronic Serial Number
Network Server Mode Active and No
Keyboard Attached
Parity Check 2
System will not boot without fan
56 Appendix A POST Error Messages
Description
resulted in a failure.
MEBx operation experienced a hardware
error during communication with ME.
Electronic serial number is missing.
Keyboard failure while Network Server Mode
enabled.
Parity RAM failure.
CPU fan not installed or disconnected in
VSFF chassis.
Recommended action
1. Reboot the computer.
2. If the error persists, update to the latest
BIOS version.
3. If the error still persists, replace the
system board.
1. Reboot the computer.
2. If the error persists, update to the latest
BIOS version.
3. If the error still persists, replace the
system board.
Enter the correct serial number in Computer
Setup.
1. Reconnect keyboard with computer
turned off.
2. Check connector for bent or missing
pins.
3. Ensure that none of the keys are
depressed.
4. Replace keyboard.
Run Computer Setup and Diagnostic utilities.
1. Remove the computer cover, press the
power button, and see if the processor
fan spins. If the processor fan is not
spinning, make sure the fan's cable is
plugged onto the system board header.
Ensure the heatsink is properly seated
and installed.
2. If the fan is plugged in and the heatsink
is properly seated but the fan does not
spin, then replace the heatsink-fan
assembly.
ENWW