Vista 64 performance issues

[cowz69]

My PC:
Phenom X2 940 (also tried at 3.5ghz)
ASUS M3A79-T (790 FX)
4GB 1333 OCZ RAM
WD Raptor 150 GB (OS drive)
GEFORCE 8800GTX at stock speeds

Windows Vista 64 bit with SP1 and fully updated.
NVIDIA 185.81 Beta drivers (tried the newest release as well)
Direct X 10 installed

Vista experience index lowest subscore is 5.9
3dmark 06 gives me 4104 and games dont function with any reasonable FPS. I don't really want to reinstall XP. Do I have any option/anyone got ideas?

 

[Billb2]

Originally posted by: cowz69

GEFORCE 8800GTX at stock speeds

3dmark 06 gives me 4104

Something's definitely wrong there, but without knowing a lot more it's kind of hard to say what.

 

[Tarrant64]

Have you tried any older versions of the video drivers?

 

[Matt1970]

Originally posted by: Tarrant64
Have you tried any older versions of the video drivers?

That's what I was thinking. Try rolling back the video driver.