I am having the same screen problems. I assumed it was related to win 8 so I changed mine to win 7 pro. With this change I still have the problem. I tried the suggested “LCD BIST’' There were no lines on the screen. Also the start up screen is always clear and then as soon as I log in then there is a problem. I have tried to adjust the screen res when this problem is happening and it fixed it right away. So I think that there could be a hardware issue. Please any recommendations would be great.
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