I have a Dell XPS 15z i7 2620 ghz 8 gig ram 750g HD etc with an Nvidia 525 video card anyways installed a fresh copy of windows 7 Ultimate and refreshed all the drivers with updates including the dell NVidia drivers and display drivers from their website. I have been having issues with the log on normal display but then sometimes the desktop background is pixelated and distorted, sometimes not, then sometimes when editing photos the display goes pixelled and distorted, need to restart and sometimes more than once. The log on screen is never distorted though, <profanity deleted> gives. ???
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