[Gatts]

Phineas: email to: support(at)1cpublishing(dot)eu

Even if I do not believe the problem is on your HW / Video card drivers side, still one question:
When you reinstalled video drivers: have you first uninstalled them in save mode? (Did you uninstall also any video related software, like movie codecs, or 3D software acceleration software?)

After you reinstalled both DirectX and Video Drivers, have you reinstalled the game? (and not using any patches at first try...)?

Do you have many devices attached to the PC? (usb/serial/parralel/PS2/IEEE...)
Do you have any programms that start at the pc start and are persistent in the background (like video/audio/input device supporting software? Some are from ADOBE, some from many retailers... sometime one may not know what is run at startup or by msconfig...)
Sorry if my questions sound useless, but let's try anything.