I suffer of screen pixelation in Windows7 HE using an HD 5770 1gb. I have Catalyst 12.3 . 3d games works well, bus windows screen aspect is pixelated as you can see in attached jpg. What´s going wrog? I have moved from many catalyst version, wipe drivers, installed almost 20 times, but no luck. The screen image is this:
https://www.dropbox.com/s/f1y8mamv35ieif0/pixelacionescritorio.jpg
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ati HD5770 1gb