Hi guys I'm having such a huge problem right now. I don't know what to do... I'm using windows 7 64 bit and when i play my games the game would litterally skip... kind of like having frame skip on the highest then playing a game.. Also, windows media player would either do one of the following:
1. video skips and no audio plays
2. Server execution failed
3. The video will play for like 5 seconds then says it cant play the file..
Also when i try to run the windows experience index it will get the video decoding and it will say that it can't complete it for some reason. I've tried reinstalling windows and it just kept happening

I've tried doing everything to repair WMP and then it would work until i reboot again. even when i dont repair it i have to reboot then it would be fine... but thats just a huge annoyance . Please can somone help?

My specs: 
ATI 6950 sapphire 100312-3L
AMD fx 6100 6 core processor
8 gigs DDR 3 ram
128 GB SSD samsung 830

650 watt PSU

motherboard: biostar A880GZ

Using 12.8 catalyst drivers