I feltlike playing half life, so yep, i install it and start it up.
Just at the loading screen (at the very beginning), the game crashes and the computer clamorously reboots...
It never happened before just a few years ago... help?

These may be helpful:
CPU: AMD Athlon xp 1800+
RAM: 1Gb
Video card: Nvidia geforce 6200

fenks

Try reinstalling it... some file might have been corrupted.

What OS you using?

oh noooo not half life 2

Did you buy or download it?

Sounds like a BSOD. Disable Automatic Restart on System Failure and tell us what the BSOD says.

No BSOD, just a plain reboot...
Anyway i use Xp, and i downloaded the game.
I'll try to reinstall it over.

If reinstalling doesn't work, try re-downloading.

That would be because it automatically restarts instead of displaying the BSOD by default. Disable Automatic Restart on System Failure and tell us what the BSOD says.