Help With Odd Computer Problem

[crew]

Hi,

I just built my first PC. I used an Athlon 3700+ with a 256MB PCIE 6600GT. Everything seems to work great, until I loaded Half Life 2. It launches, goes to the first screen, goes to the loading screen, and then kicks me back to the desktop. I get no warnings or BSOD. I installed the latest drivers, and have tried multiple times, getting kicked out at the same spot each time.



Any suggestions?