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Thanks cluberti. I should also note that I haven't seen any other sort of graphics corruption anywhere else. I'm leaning towards a driver issue, but part of the problem is I've also been unable to consistently reproduce the error, making it difficult to pinpoint it on something specific or a specific series of events. Even if a driver update was to fix it, I have no way of knowing either way unless it was to pop up again days or weeks down the road. To maybe help rule out the hardware issue, does a memtest86 (or similar) for video cards exist?

Occasionally my Windows 7 taskbar gets corrupted with a cascading like effect (see attachment). Happens every 2-3 weeks and usually after resuming from standby, although once it happened after a reboot. • Logging off or rebooting with fix the problem • A screenshot (using print screen) does not show the corruption (the attached picture was from taking a picture of the screen with a camera) • No 3rd party programs have been used to modify the taskbar • Graphics drivers have been updated several times to the latest release, but still no change. Specs: Windows 7 Pro x64 ATI Sapphire HD 4670 Intel i5 750 Gigabyte GA-P55M-UD4 Corsair XMS3 PC3-12800 (4 x 2GB) Any thoughts? Thanks for your help. -Todd