Beep Codes and Error Messages 3-5
Address mark
not found
Attachment
failed to
respond
BIOS found faulty disk
sector or could not find
particular disk sector.
Diskette drive or hard-
disk drive controller
cannot send data to
associated drive.
Faulty diskette/tape drive
subsystem or hard-disk
drive subsystem (defec-
tive system board), faulty
interface cable or
connector.
Alert! Cover
was previously
removed.
Cover was previously
removed. Cover was previously
removed.
Alert! Hard
disk drive
thermal probe
failure
detected.
Hard-disk drive thermal
probe has failed. No hard-disk drive
thermal probe installed,
defective thermal probe,
or thermal cable not con-
nected to the control
panel.
Alert! One or
more of the
Memory DIMMs
are out of rev.
System detected that
one or more of the
DIMMs are not the cor-
rect revision.
DIMMs do not meet
Intel’s SPD 1.2 specifica-
tion or 66-MHz DIMMs
are installed.
Alert! Previ-
ous fan
failure.
System fan failed during
the previous operating
session.
No fan installed, defec-
tive fan, or fan cable not
connected.
Alert! Previ-
ous hard-disk
drive thermal
failure.
The hard-disk drive(s)
exceeded its recom-
mended operating
temperature during the
previous operating
session.
Operating environment is
too hot (above 35°C). The
system vents may be
blocked, causing the sys-
tem to overheat.
Alert! Previ-
ous processor
thermal
failure.
The microprocessor
exceeded its recom-
mended operating
temperature during the
previous operating
session.
Operating environment is
too hot (above 35°C). The
system vents may be
blocked, causing the sys-
tem to overheat.
Alert! Previ-
ous voltage
failure.
System voltage
exceeded or fell below
an acceptable
threshold.
Defective power supply.