Yesterday I received an MSi nVidia GeForce GT640 graphics card to replace my aging EVGA nVidia GeForce 430 card. My EVGA card has no problems but when I switched the cards, my MSi card triggered AVG Watch Dog to run system checks and afterward would stall.
So I tried to go into safe mode with the new card installed. It would go from start to Classpnp.sys and then stop. I left it to sit for atleast five minutes or so. But it wouldn't go any further.
What do I need to do to fix this problem..? I have Windows 7 Home Premium Edition. Would I need to use the classpnp.old?
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