graphics card fails with drivers

im having issues with 2 notebook computers that have the same video card, the problem starts when I log into windows, the displays just shows vertical lines green and red all messed up, I can log into safe mode with no problem, if I uninstall the video drivers I can log in just fine normaly in windows, but if I install the latest drivers it fails again. this is happening in both computers the video card is Nvidia M8600 GS, one computer is running on win7 and the other on Vista, both computers have presedents of getting very hot even to touch. any advise is greatly apreciated
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sounds like the inside layers may be cracked
Nvidia had lots of issues with that series. Good chance you can take advantage of an extended warranty and have it repaired. I know Apples and a few PC companies will honor a free repair for this issue. Basically the whole Mainboard(motherboard, logic board) has to be replaced.

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As far as the heating goes you can clean the fans, and use a notebook cooling pad.

see Freds message last Thusday on cleaning fans and too hot temps:
laptop cooler pads run $24 on up.  We use the Zalman at home.  Check them out at Newegg:

Rather than uninstalling the drivers have you tried rolling them back to the previous version or installing the previous version if you have them?
Arman KhodabandeIT Manager and ConsultantCommented:
What brands do you use?

Try testing your graphics card via "dxdiag" type it in start menu.
and then go through all the tests . . .
(Do this when you've uninstalled the drivers)
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