HP dc7900 - Convertible Minitower PC Service & Reference Manual page 244

Table C-1 Numeric Codes and Text Messages (continued)
Control panel message
2205-Interface error during MEBx execution
2211-Memory not configured correctly for
proper MEBx execution.
Invalid Electronic Serial Number
Network Server Mode Active and No
Keyboard Attached
Parity Check 2
232 Appendix C POST Error Messages
Description
MEBx operation experienced a hardware
error during communication with ME.
DIMM1 is not installed.
Electronic serial number is missing.
Keyboard failure while Network Server Mode
enabled.
Parity RAM failure.
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.
Make sure there is a memory module in the
black DIMM1 socket and that it is properly
seated.
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.