Vertical lines then crash

insan3

Distinguished
Jan 1, 2007
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Im having some problems with my computers display. The computer was fine when it was turned off yesterday, but this morning when i went to turn it on, nothing came on to the display. The computer started up, beeped once, but the screen just stayed black.
So I switched DVI slots on the back of the video card (ATI 4850) to the one on the right (facing back of computer), and this time the monitor displayed a picture, but it was distorted with about inch wide red and blue vertical lines. Then once it gets past the windows 7 loading screen, it has a memory dump and crashes/restarts. I can start the computer in safe mode and it will work, but the heavy vertical lines are still there and it is pixelated.
Any ideas on what this could be?
Thanks guys