HP COMPAQ DC5750 Service & Reference Manual page 161

POST Error Messages (Continued)
Screen Message
Network Server Mode
Active and No
Keyboard Attached
Parity Check 2
System will not boot
without fan.
Service Reference Guide, dc5750
Probable Cause
Keyboard failure while
Network Server Mode
enabled.
Parity RAM failure.
CPU fan not installed or
disconnected in VSFF
chassis.
437963-001
POST Error Messages
Recommended Action
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 access panel, press the
power button, and see if the
processor fan spins. If not spinning,
make sure the fan 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.
C–7