Gateway fx540 Reference Guide

Page of 164
CHAPTER 7: Troubleshooting
118
The computer is running, but there is no picture
Adjust the brightness and contrast controls to the center 
position.
Check the cable for bent or damaged pins.
Make sure that the monitor is plugged in and turned on. 
If the monitor is turned on, the power LED should be lit.
Make sure that the video cable is connected to the video 
port on your computer.
Connect an external monitor that you know works to 
your computer.
Reinstall the device driver.
The color is not uniform
Make sure that the monitor warms up for at least 
30 minutes before making a final judgment about color 
uniformity.
The text on the screen is dim or difficult to read
Adjust the brightness and contrast controls.
Change the screen settings. For more information, see 
the “Customizing Windows” chapter in your online User 
Guide
For more information about monitor types, see your monitor 
and video card documentation.
Mouse
The mouse does not work
Make sure that the mouse cable is plugged in correctly.
Shut down and restart your computer.
Remove all extension cables and switch boxes.
Try a mouse you know is working to make sure that the 
mouse port works.
Help
For more information about changing the screen resolution, click Start
then click Help and Support. Type the phrase 
screen resolution in the 
Search Help box, then press E
NTER
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8512728.book  Page 118  Wednesday, September 19, 2007  3:44 PM