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Troubleshooting 95
The mouse doesn’t work.
Video problems
The system is running but there is no display.
Probable Cause Solution
The mouse is not
plugged in or connected
properly.
Check the cable. Make certain it is plugged in
correctly.
The mouse driver did
not load when the
system booted.
Load the appropriate mouse driver manually or
contact Technical Support.
The mouse is defective. Try a mouse you know is working.
Probable Cause Solution
The monitor is not
turned on.
Make certain the monitor is plugged in and
turned on. If power is applied to the monitor, the
green power LED should light.
The monitor data cable
is not connected.
Make certain the monitor data cable is
connected to the video controller on the back of
the system.
The connector or cable
is damaged.
Check the connector and cable for bent or
damaged pins.
The monitor is defective. Connect a working monitor to the computer.
The monitor brightness
and contrast controls
are turned down.
Adjust the brightness and contrast knobs to the
center position.
The video card is not
seated correctly.
Open the system and reseat the video card. This
possibility is only valid for systems that include
an add-in video controller.
The video card is not
compatible with the
system.
PCI video cards must be compatible with the
system. This possibility is only valid for systems
that include an add-in video controller.
4075.book Page 95 Friday, April 2, 1999 9:26 AM