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my screen freezes but computer doesnt.. help please
Im having a really strange issue on my computer, im running windows 7 x64
basically what happens is im using my computer and suddenly it freezes. At first I thought the whole computer freezes but I soon realized this is not the case. My mouse pointer remains free and i can move it while everything else freezes. The strange part is that the actual computer doesnt freeze, I know this because of some things I observed in this "frozen" state:
- if i have itunes running before it freezes , I can still hit the pause/play buttons and switch songs after it freezes by clicking on them in the itunes interface. The selected song plays, and hitting the pause/play buttons do what they should, but nothing changes on the screen, it remains "frozen"
- if i double click a program from a desktop icon I get the loading mouse pointer as if the program is loading but the screen remains frozen so i dont actually see the program pop up.
so basically what I thought was my computer freezing is really just my screen freezing, the computer is running fine in the "background" as I can still do certain tasks, but the screen doesnt update to reflect these tasks.
What could be the problem? I had this same exact issue like half a year back and it one day just went away so I never bothered with it but here it is, its back and its really annoying because i have to hard restart my computer every time it happens.
Sometimes it happens out of nowhere, but I noticed it happens most of the time when my computer "shakes". Like when i get up and bang my knee on the desk, it freezes. or when i walk like an elephant in my room, it freezes.. etc. But sometimes it happens when im sitting perfectly still also so I dont even know if the shaking is really what causes it
Any suggestions? Could it be my video cards? I have 2 GTX 470's