X800GT not working anymore...

[Clowned]

Hi,

I got a ST20G5 shuttle, running a Sapphire X800GT 256MB pci-e graphics card. Its been fine for the past year, no problems at all, running cs:s, hl2 happily. I reformatted, and reinstalled windows recently and whatever i do it doesnt want to play any form of a video.

If i put a dvd in it pushes cpu usage sky high and crashes. Same with xvids, divx's etc. It doesnt even load the video on screen, it just grinds to a halt. I cant remember what drivers i had before, and i tried old ones, and new ones, installed dvd codec, xvid, divx. Any ideas what the problem could be? ive tried 3 different catalyst drivers, so maybe its not that, and something else i havent thought of.

I tried the onboard graphics and it seems to work fine on that, so im wondering if ive done something wrong, or am totally overlooking something.
Any help would be appreciated

Thanks

 

[Gas Panic!]

It might be worth installing a Codec pack, just to make sure you have all the required codecs.

CCCP is good.

 

[Clowned]

It might be worth installing a Codec pack, just to make sure you have all the required codecs.

CCCP is good.

Downloaded and installed. Still crashed.

I then realised the first thing i did after reinstalling windows was update my bios with the winflash utility. I rolled back to an older bios and its fine :s very strange.
If someone could explain that id appreciate it.

Cheers