Well...any other indications that your graphics card might be bad?
Problems only when gaming?
Did you take a look in Event Viewer for clues?
Run the DirectX diagnostic? Which version of DirectX is installed?
It's an ATI product, so I guess it's probably the drivers (I have 2 old ATI cards installed)
Are you using the drivers from the CD (not from the website)?
Related post: http://www.bleepingcomputer.com/forums/t/121481/screen-flickers-for-games/
Edited by hamluis, 18 December 2007 - 06:23 PM.