Upgraded to Windows 7 64-bit this morning from Vista 32-bit. I'm having some problems with the graphics.. Before I got an overall Windows Experience Rating of 5.0 and now my lowest sub score rating is 3.4 (Gaming Graphics).
Before, when I played games such as Killing-floor I could run it in the highest settings very smoothly, and now it jerks a lot.
Rough spec of my laptop;
-Intel Core Duo T6500 (2.1Ghz, 800Mhz FSB)
-ATI Radeon HD 4670 (1gb)
-4 GB Memory
I've updated my ATI drivers using this;
Code: Drivers & Support | GAME.AMD.COM
I also noticed this; http://i34.tinypic.com/23i9fed.png