Originally Posted by Kemo
Sorry but it's kind of hard going back to 32-bit XP, 64-bit just runs alot smoother than 32-bit. And I like to have 4GB of memory for games like GTA4 and future apps. I don't think changing over to 32-bit XP just for L4D2 is justified at this point.
I even tried loosening my RAM timings to 5-5-7-24, that didnt work.
Have you tried to upgrade to Vista or Win7 64-bit?