
2-6
Troubleshooting Flowcharts for Desktop Computers
5. No Video, Part 1
No video
Beeps or
flashin
CPU
or keyboard
li
hts?
Monitor LED
on?
Contrast and
bri
htness
turned up?
Turn contrast and
bri
htness up.
Go to Pa
e 2-7,
No Video, Part 2
Go to Pa
e 2-9,
Error Messa
es,
Part 1
LED color?
(note 1)
Video
adapter
connected?
(note 2)
Monitor
plu
ed in and
turned on?
Plu
in and turn on
monitor, then
return to Pa
e 2-2,
Initial Troubleshootin
.
Reconnect
monitor
(note 3).
Y
N
Y
Y
N
N
Green
Amber
N
Notes:
1. Older monitors do not support the amber LED.
2. If more than one adapter is installed, monitor
must be connected to primary controller.
3. Turn off and unplu
computer before
reconnectin
cables.
N
Video OK?
Y
Done
Caution:
Power is continuous to the system board and power supply even
when the power switch is turned off. To prevent dama
e to the unit, disconnect
the power cord from the power source or the unit before be
innin
disassembly
procedures.
Y
Y
Plu
in, turn on, and
return to Pa
e 2-2,
Initial Troubleshootin
.
Replace monitor.
N
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