144 Solving Problems
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– Electrical appliances on the same circuit or operating in close
proximity to the computer can cause interference.
– Audio equipment and certain types of lamps operating in
immediate proximity to the computer can cause interference.
•Restart the computer.
•Enter system setup and ensure that Pr imary Video C o ntrol ler under
the Integrated Devices option is set correctly. An AGP or PCI card will
operate with Primar y Video Contr oller set to either Auto or the
default setting AGP.
NOTE: If your computer has
both
AGP and PCI video expansion cards
installed, set Primary Video Controller to AGP to use the AGP expansion
card. Set Primary Video Controller to Auto to use the PCI expansion
card.
If the problem still exists after you complete the basic checks, fill out the
Diagnostics Checklist as you perform the following steps:
1Perform the procedure in "Monitor Problems."
Is the computer working properly?
Yes. The problem is resolved.
No. Go to the next question.
Do you have another computer that is working properly?
Yes. Go to step 2.
No. Go to step 6.
2Turn off the origin al comp uter an d monit or, wait 1 0 to 20 s econds , and
disconnect the monitor.
3Turn off your other computer, wait 10 to 20 seconds, and disconnect
its monitor. Connect the monitor from the original computer, and
then turn them on.
4Allow 1 minute for the compute r t o initialize its components, and
then adjust the monitor's brightness and contrast controls.
Is the monitor readable?
Yes. The monitor is working properly. There may be a problem with the
video card in the original computer. Go to step 5.
No. The monitor may be defective. See "Monitor Problems."