Had a bad reset from an FSB overclock. Everythings back up now but there is one problem, gfx card seems to work fine, displays games in lovely colours, displays screen, runs 3d mark 03... BUT when I try to play a movie file, whichever player I use, it comes out in a washed out/grey and blurred so that its difficult to make out ::edit:: All fixed, reseated the cards, reinstalled drivers, let everything cool down. Seems to be working now, going to run a few stress tests and see how its holding up
