There have been serious developments:
I took out the cmos battery and re-seated the ram, turned on pc, turned off, restored bios defaults,
Now what happens is even WORSE!!!!
Power saving mode the SECOND I play a movie (tried only media player 11), and sometimes even a grey or a blue screen (not the normal bsod, but just a blue screen with no writings on it)!
This happens even in 1440X900 and even when windows aero is off (which I thout was causing the problems at first)!!!
I uninstalled nvidia driver (using driver cleaner pro in safe mode) and tried an older one (still problem persists), and then installed back the new driver (still problem persists).
I dont know if I should try re-installing vista because what if the gtx280is casuing these problems? Even though now I can't even play games!