PCTech Forums

You might check to see that the connectors to the monitor and the computer are secure and tight. While you're back there, there is a date of manufacturer on the monitor. That will give you an idea as to how old it is.

Another thing to check, is the monitor scan rate. Rightt click on the Desk top--->select Properties----->select Settings. Bottom rt corner select Advanced. Then select monitor tab. There you willl see monitor settings. A refresh rate 70 to 75 should be about right. Set it on a different one and see if that helps. If the monitor is going bad, this could speed up the process . If it isn't it might help

Also there is usually a degauss button or sometimes two buttons that you push at the same time, that could also cure it. They're usually on the front panel and labled as such.

do you have a fan, heater or radio plugged into the same powerstrip?
if you do that might be the problem.