How about a fresh format?
I have tried swapping hardware like vid cards and noticed odd glitches at times until I do a clean install, even after following the proper procedures like running driver cleaner.
AS a matter of fact, I recently put my X-800 Pro back into my Mobile 2500+ rig, and now everyonce in a while it decides to play the Matrix on me..the video looks all weird until I reboot.
This same card worked fine a few months ago in this rig..if I weren't taking it back out soon..I would be formatting the
HD in a heartbeet