Constantly re-setting computer, urgent help needed!

[brocksta]

Ok, i have this computer, which is booting up to the windows OS loading screen, but then continues to restart and does this over and over again.

Ive now got the hard drive in another computer and i can access it fine. Could one of Windows' files have corrupted? If so can i simply replace it with the one in my working machine? or will this cause problems? thanks,

andy

 

[brocksta]

well it was my brother that was using it, and he says he made no changes.

 

[brocksta]

hehe. Sorry i forgot to mention, LKGC and Safe mode dont work either. It tries loading windows but eventually the PC restarts again.