would boot normally

[Mike]

Everytime I boot up to windows 2000 it almost makes
throught the boot then it stops shuts down and reboots
again. I've tired everthing but nothing works.

 

[Donald]

Have you added any new hardware and installed new drivers, or have you
upgraded drivers for any hardware?

Did you try booting from LastKnownGood?

Check out :
315396 - HOW TO: Troubleshoot Startup Problems in Windows 2000
http://support.microsoft.com/?kbid=315396#2