USB Enhanced and Integrated Ethernet Service Manual
Beep Codes and Error Messages 3-9
Sector not 
found
MS-DOS unable to 
locate sector on diskette 
or hard-disk drive.
Defective sectors on dis-
kette or hard-disk drive.
Seek error MS-DOS unable to 
locate specific track on 
diskette or hard-disk 
drive.
Defective diskette or 
hard-disk drive.
Seek opera-
tion failed
System could not find 
particular address mark 
on disk.
Faulty diskette or hard-
disk drive.
Shutdown fail-
ure
System board chip 
faulty.
Defective system board.
Terminator/
processor 
card not 
installed! 
System HALTED!
System does not have 
terminator or add-in 
card.
Terminator or add-in 
card improperly 
installed, or no card 
installed.
Time-of-day 
clock stopped
Backup battery low. Defective battery or 
faulty chip (defective sys-
tem board).
Time-of-day 
not set
Time or Date settings in 
System Setup program 
incorrect, or backup bat-
tery bad.
Incorrect Time or Date 
settings, or defective 
backup battery.
Timer chip 
counter 2 
failed
Timer circuit on system 
board malfunctioning.
Defective system board.
Unexpected 
interrupt in 
protected mode
Keyboard/mouse con-
troller malfunctioning, 
or one or more DIMMs 
improperly seated.
Improperly seated 
DIMMs or faulty key-
board/mouse controller 
chip (defective system 
board).
Warning-
Thermal 
probes failed
At system start-up, 
BIOS detected that one 
or both thermal probes 
are nonoperational.
Defective system board.
Table 3-2. System Error Messages
 (continued)
Message Definition Probable Causes










