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F-2 POST Error Messages
Table F-1
Continued
Message Beeps* Probable Cause Recommended Action
301-Keyboard Error or
Test Fixture Installed
None Keyboard failure. Replace the keyboard.
303-Keyboard Controller
Error
None I/O board keyboard controller.
1. Reconnect keyboard with computer turned
off.
2. Replace the system board.
304-Keyboard or System
Unit Error
None Keyboard failure.
1. Replace the keyboard.
2. Replace the system board.
402-Monochrome
Adapter Failure
1L, 2S Monochrome display controller. Replace the monochrome display controller.
404-Parallel Port Address
Conflict Detected
2S Both external and internal ports are
assigned to parallel port X.
Run Computer Setup or Windows NT or
Windows 95 utilities.
501-Display Adapter
Failure
1L, 2S Video display controller. Replace the graphics board.
601-Diskette Controller
Error
None Diskette controller circuitry or floppy
drive circuitry incorrect.
1. Run Setup.
2. Check and/or replace cables.
3. Replace diskette drive.
4. Replace the system board.
602-Diskette Boot Record
Error
None Diskette in drive A not bootable. Replace the diskette.
605-Diskette Drive Type
Error
2S Mismatch in drive type. Run Computer Setup or Windows NT or
Windows 95 utilities.
610-External Storage Drive
Failure
None External tape drive not connected. Reinstall tape drive or press F1 and allow
system to reconfigure without the drive.
611-Primary Floppy Port
Address Assignment
Conflict
2S Configuration error. Run Computer Setup or Windows NT or
Windows 95 utilities.
612-Secondary Floppy Port
Address Assignment
Conflict
2S Configuration error. Run Computer Setup or Windows NT or
Windows 95 utilities.
912-The Computer Cover
Has Been Removed Since
Last System Startup
None No action required.
1151-System Board Comm
Port 1 Address Assignment
Conflict
2S Both external and internal serial ports
are assigned to COM1.
Run Computer Setup or Windows NT or
Windows 95 utilities.
1152-System Board Comm
Port 2 Address Assignment
Conflict
2S Both external and internal serial ports
are assigned to COM2.
Run Computer Setup or Windows NT or
Windows 95 utilities.
1155-System Board COMM
Port Address Assignment
Conflict
2S Both external and internal serial ports
are assigned to the same COMM port.
Run Computer Setup or Windows NT or
Windows 95 utilities.
* L = Long, S = Short
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