User Guide
Compaq.com - Compaq Presario 1900 Series Maintenance and Service Guide - Models: 1905, 1906, 1910, 1915, 1919, and 1920
XX000YZZ 201-Memory Error 
Probable Cause  Recommended Action 
301-Keyboard Error 
Probable Cause  Recommended Action 
Keyboard failure  1. Ensure the keys are not depressed during POST. 
2. Reconnect the keyboard with the computer off. 
3. Replace the keyboard. 
304-Keyboard or System Unit Error 
Probable Cause  Recommended Action 
Keyboard or system board error  1. Replace the keyboard. 
2. Replace the TouchPad or mouse. 
3. Replace the system board. 
601-Diskette Controller Error 
Probable Cause  Recommended Action 
Mismatch in drive type or failure in the diskette 
controller 
1. Run Computer Checkup (TEST). 
2. Check and/or replace cables. 
3. Replace the system board. 
605-Diskette Drive Error 
Probable Cause  Recommended Action 
Mismatch in drive type  Run Computer Setup. 
1780-Primary Hard Drive 0 Failure 
Probable Cause  Recommended Action 
Disk 0 failed to respond  1. Run Computer Checkup (TEST). 
2. Replace the hard drive. 
Hard drive format error  1. Run Computer Checkup (TEST). 
2. Replace the hard drive. 
1782-Hard Drive Controller 
Probable Cause  Recommended Action 
Hard drive controller failure  1. Run Computer Setup. 
2. Replace the hard drive. 
1.800.AT.COMPAQ
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