Forum:Fallout glitches

Hi gang, Does anyone have the same problem as me in fallout NV. For some reason the player just starts running, it is difficult to stop them. Then you hear a windows sound, like when you plug in a usb. The screen then freezes. Then it all works again.

This also happenes in Fallout 3

My specs are:

Amd phenom II 4x core 965 black edition, 2Gig ram, Radeon HD 5770 graphics card Asus M4A88TD-V series motherboard

Any help would be appreciated. Thanks Woody