1°) Computer shut down by 3D activity is most part of time a graphic adapter problem.
2°) check your graphic adapter driver, motherboard chipset and agp port driver update.
3°) after a proper uninstall from game make a new installation NEVER LAUNCH THE GAME WITH ORIGINAL EXE FILE.
4°) use the NoDVD "TOCA Race Driver 3 v1.0 [ENGLISH] No-DVD Patch 19-07-2006 by nonspin ",
Replace the original RD3.EXE file with the one from the File Archive #1.
Extract the RD3.PATCHER.EXE Patch from the File Archive to the game directory.
Execute the Patch to remove the CD-Check from: RD3.EXE
Play the Game!
They run proper and if doesn't work than buy a new graphic card with DX9 compatibility certification. Can you give a description from your hardware?
5°) It's possible you have a hardware problem or you run an overclocked computer?
6)° if you run XP sp2, with a VIA chipset motherboard, remember, only the windows SP2 default AGP port driver run proper.
http://forums.viaarena.com/messagevi...&enterthread=y