M7700 video/mobo issues, screen tweaking

I got my M7700 in the summer of 2006 and never had any real problems with the video or display at all until recently. i was having wireless problems which i solved by respawning, but once my system was set back to the factory image some strange things started happening. Number 1: when i open some windows, especially MS Windows apps these pink,cyan, or yellow rows of pixels wil randomly show up around thumbnails and images. Number 2: when i start up a game, especially neverwinter nights, the video goes bat-shit crazy, all the surfaces start flickering,there is a visible line down the center of the screen and the colors on every character are pulled from that line to the characters's position, and lighting effects will freak out. Number 3: also in NWN these random rows and columns of rectangular boxes about 10 pixels wide and 5 pixels high appear in groups all over the screen and the menu GUI tweaks out.

These are the ways i tried to fix this that didn't work: updating windows and my Nvidia 6800 go drivers, putting my GPU in the oven, cleaning out all of the fans and internal components and reapplying thermal goo to the GPU, rolling back to earlier versions of my video drivers...can't think of what else. Anyways, the newer drivers only create more problems with the right click freezing the computer and making the screen flash to black for a few seconds before returning to normal.

Sorry for all the description but i am at my wit's and weekend's end, so any ideas?

Thanks anyone.