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 t he power supp ly.
7. Replace t he system boa rd.
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 throug h 4 listed in t hi s
table under No Power.
2. Check power supply voltages. Voltages
should be measured with a load on them
(system board plugged in).
3. Replace t he power supp ly.
Operatin g s ystem
does not boot Intermittent beeping at power-on.
Computer beep s more than o nce
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
parameter s.
2. Replace the CMOS battery (see
Section 3) if the date and time must be set
each time th e c omputer is po w ered on.
Computer halts during loading
sequence. 1. Power the com puter off. Ch eck for
proper jumper settings (see Section 2), then
power-on th e 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.