Colored dotted lines across the screen
Last week my computer started putting dotted lines across the screen when I open up the start menu and most web pages. I use Mozilla Firefox and Internet explorer. It is really bad on Firefox but only does it when I drop down the web address bar on Exploerer. This is getting really annoying and seems to be getting worse.
Computers & Internet - XFX - GeForce 6200 Graphic Card
Answers & Comments
If you understand the components of a computer pretty well, open the case and remove and reseat the graphics card into the slot.
Does it seem to only do it after so long, for example turn the computer of for a few hours, and it wont happen when its first turned on, but then a few moments later it starts after its warmed up?
If this does not resolve the issue, you may be experiencing graphic artifacts which can occur when a gpu is overheating due to a poor cooler. Check to make sure the heatsink is touching the gpu.
Artifacts: http://www.playtool.com/pages/artifacts/badgpu.jpg