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Troubleshooting 7-7
Problems and Solutions
Problem Symptom Solution
No power (cont’d) 4. Check +5 and +12 power supply
voltages. Measure voltages with system
board installed.
5. Replace the power switch assembly.
6. Replace the power supply.
7. Replace the system board.
Power supply
malfunction
Any of the following conditions
could occur:
Front panel lamps out, diskette
and/or hard drives do not spin,
monitor blank, interface ports not
working, and keyboard lamp out
and/or cannot input from keyboard.
1. Perform steps 1 through 4 listed in this
table under No Power.
2. Check power supply voltages. Voltages
should be measured with a load on them
(system board plugged in).
3. Replace the power supply.
Operating system
does not boot
Intermittent beeping at power-on.
Computer beeps more than once
and is unable to complete boot-up.
1. Check system configuration (see
Section 2).
2. Check all jumper settings and verify that
drives are enabled (see Section 2).
3. Reseat DIMMs and option boards in
their connectors. Inspect system board for
foreign objects such as paper clips.
4. Remove option boards and reboot.
5. Replace system board.
“Invalid Configuration” message
displayed.
1. Press
F2
to run Setup and correct the
parameters.
2. Replace the CMOS battery (see
Section 3) if the date and time must be set
each time the computer is powered on.
Computer halts during loading
sequence.
1. Power the computer off. Check for
proper jumper settings (see Section 2), then
power-on the computer.
2. Check condition of selected bootload
device (diskette, disc, or hard disk) for bad
boot track or incorrect OS files.
3. Try booting OS from diskette or disc, or
recopy OS files onto hard disk.
4. Verify correct hard disk is selected.