So, about a week ago, my computer screen started to get blurry: when I move the mouse, wherever it goes, a distrurbance - of sorts - is left behind. If you are familiar with any picture editing software, it is like everything becomes pixelated. For example, if i shake a window left and right, it is like i have stretched every pixel horizontally 3 inches wide. WHenever I open a new window, though, the pixelated area is fixed. About three days ago, the problem became more dramatic. Now, if i use the computer for about 30 minutes (btw if i keep the screen close and don't use it, this does not happen), the compute screen gets covered in black and grey boxes that never go away . . . I have tried running Nortan and Ad-Aware, both updated, and they ofcorse find stuff but nothing of which is causing this problem. THanks a lot.