Whilst using my pc (but most noticeably guild wars), the fps in-game drops to ~5fps. I've done all i can think of to resolve the issue including: altering performance settings, cleaning video drivers and re-installing, even as far as formatting my comp and starting from scratch. Nothing has changed.

I'm using an Asus EAH2600 pro, 2gig ram and a AMD Athlon 64 3200+

Although tuning down the settings help slightly, its nothing what it used to be before i had to repair windows (used to get ~150fps :grinthumb )

Any suggestions as to a solution would be most welcome, ill keep you updated on the progress. Cheers in advance.