Chapter 12: Video Cards^277
Troubleshooting Video Problems
The following sections include some procedures you can use to troubleshoot specific
video-related problems. If you are unsure of the problem, use the general steps listed in
“Troubleshooting the Video Card.”Nothing Is Displayed on the Monitor
First thing, check the obvious: Is the monitor plugged into a power source?
Is the monitor switched on?
Is the monitor connected to the proper connection on the back of the PC?If you really want to eliminate the monitor as a suspect (or confirm that it is the prob-
lem), try connecting another monitor (one that you know for sure works) to the PC. If it
works, then the original monitor may be bad. If the second monitor does not work, then
the problem is likely not the monitor.Figure 12-7. The DOS Debug command can be used to display the type of video adapter
a PC is using