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CD-ROM
malfunction
Communication
error
Beep
Codes
During boot up, the computer performs a series of POST (Power On Self Test) routines. A beep code may
appear when an error is detected. There are fatal and nonfatal errors. The fatal errors include BIOS, CMOS,
DMA, RAM, video, and keyboard controller errors. The nonfatal errors include timer tick interrupt, shutdown
test, unexpected interrupt in protected mode, gate A20, RAM test, interval timer channel 2 test, clock, serial
and parallel port test, math co-processor, system board select, and extended CMOS RAM.
The following table provides a description of the beep codes.
System power not on.
Disc tray does not open.
Cannot access CD-ROM reader.
No sound from CDs.
No or bad data when
communicating.
1. Turn system power on.
1. System power not on. Turn system power
on.
2. System power failed. Insert about an inch
of a straightened paper clip into the
emergency eject hole, until the tray opens.
1. Check that the CD-ROM driver software
is loaded and not corrupted.
2. Check signal and power connections
between the reader, system board, and power
supply.
3. Check the master/slave jumper settings.
4. Check the IDE cable. Replace as
necessary.
5. Check the power supply. Replace as
necessary.
6. Check the system board. Replace as
necessary.
1. Check that speaker power is on and
volume is adjusted.
2. Check audio software settings.
3. Check the CD disc.
4. Check the CD-ROM drive audio cable.
Replace as necessary.
5. Replace the CD-ROM reader.
6. Replace the system board.
1. Check cable connections between
system board and device.
2. Check that the interface port is
selected.
3. Test or replace the device and
interface cable (see the device documentation
for troubleshooting).
4. Replace the system board.
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