Compaq Service Reference Guide D-7
POST Error Messages
Continued
Screen Message Beeps* Probable Cause Recommended Action
1771-Primary Disk Port
Address Assignment Conflict
2S Internal and external hard
drive controllers are both
assigned to the primary
address.
1. Remove any disk controller
expansion cards.
2. Clear CMOS.
3. Reconfigure card resources
and/or run Computer Setup (F10
Setup).
1772-Secondary Disk Port
Address Assignment Conflict
2S Internal and external hard
drive controllers are both
assigned to the primary
address.
1. Remove any disk controller
expansion cards.
2. Clear CMOS.
3. Reconfigure card resources
and/or run Computer Setup (F10
Setup).
1780-Disk 0 Failure None Hard drive/format error. 1. Run Computer Setup (F10
Setup).
2. Clear CMOS.
3. Check cables/jumper settings.
4. Run hard drive diagnostics.
5. Disconnect additional drives.
6. Run the Drive Protection
System test if available.
7. Replace the hard drive.
1781-Disk 1 Failure None Hard drive/format error. 1. Run Computer Setup (F10
Setup).
2. Clear CMOS.
3. Check cable seating/jumper
settings.
4. Run hard drive diagnostics.
5. Disconnect additional drives.
6. Run the Drive Protection
System test if available.
7. Replace the hard drive.
* L = Long, S = Short
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