HP dc5100 - Microtower PC Service & Reference Manual page 180

POST Error Messages
Screen Message
2000-Master Boot
Record Hard Drive has
Changed.
Invalid Electronic Serial
Number.
Network Server Mode
Active and No
Keyboard Attached
Parity Check 2.
C–6
Probable Cause
The current bootable hard
drive is not the same as
the one that was present
when MBR security was
enabled.
Electronic serial number
has become corrupted.
Keyboard failure while
Network Server Mode
enabled.
Parity RAM failure.
376220-001
Recommended Action
Run Computer Setup and either disable
MBR security or save the MBR of the
current bootable disk.
Run Computer Setup. If Setup already
has data in the field or will not allow the
serial number to be entered, download
from http://www.hp.com and run
SP5572.EXE (SNZERO.EXE).
Run Computer Setup and try to enter
serial number under Security, System ID,
then save changes.
Reconnect keyboard with computer
turned off.
Check connector for bent or missing
pins.
Ensure that none of the keys are
depressed.
Replace keyboard.
Run Computer Setup and Diagnostic
utilities.
Service Reference Guide, dc5100