I updated my video drivers and now everything runs a bit faster it seems, but only for a few minuted before it lags terribly. GTA IV/TBoGT, Bad Company 2, Crysis 1 and 2, and MW2 all do this. It doesn't happen with all games though, but the games that play normally now lag terrible too when I try to record Recording used to drop my FPS a little but not it drop it to about 3 FPS. I have an ATI and I forgot the exact model and I cant get it because the Control Center for the card wont open.
I'll post specs if needed.