Automatically Shutting Down

[ti4200]

hi all

iv recently built and old celeron 333Mhz computer with no o/c at all.
The problem is that it just turns off automatically. like i go in bios then 1 min later it just turns off, its ATX by the way.

thx for your help guys

[Gecko]

Does it shuts down when you are in the BIOS or only after you exit the BIOS?
If it shuts down when you are in the BIOS then my first feelings are that there is something over heating or the CPU or Motherboard over temp setting is to low in the BIOS.
Are all your fans working, even the power supply fan?
If it is shutting down only after you exit the BIOS then it could be driver problem.
Is there an OS installed on the system?

[ti4200]

it was turning of whenever but put another Power Supply in it and it goes fine so looks like thats the problem. Thx for your help guys i hope i can help yous later eh