Fallout3 reboots computer

Hello I recently downloaded the reloaded version of fallout 3 and it crashes everytime on the cutscene where im looking at a soldier and the wasteland is in the background. Its during the opening cutscene before I even get into the game. My PC specs are
AMD Athlon xp 64 x2 4200 +
Dual 8800 GT SLI
2 gigs of ram
Onboard sound card.
A8n-SLI Premium mobo
Windows xp pro SP2 Please help I wanna play this game.
Answer #1
NVM I fixed it I turned down the settings to high