PC shuts down when entering OS

[huewey]

My PC is fine whilst in BIOS. I have left in in bios for 10+ minutes, to check temps, and no problems there. As soon as I go into the OS(windows xp) however, it shuts down. PSU appears to be fine as far as I can tell, and mobo too(I started up without ram and heard the repeated, long beep). So I am pretty much stumped. It is a fairly old E-machine computer. Any other info you may need, in helping me to solve my problem, I'm more than happy to provide.

Thanks in advance.
Hue.

 

[penguintech]

possibly try running a repair install of XP. I would run memtest 86 and test the ram.

 

[huewey]

I dont have the original xp disk. Is there anything I can do? Ram has been tested and is fine.

 

[penguintech]

can you obtain a copy of the original software from the manufacturer? usually it is available for a minimal charge.

 

[huewey]

Ok this ha been solved now. I figured out that it was a failing PSU. Replaced it, and no problems since. FIngers crossed. Thanks for your efforts anyways.
Hue

 

[penguintech]

your welcome