Shutting down radamly

Hi, please help out guys
i have Intel p4 an old desk top

its Shutting down randomly,
some time 1 minutes, 2 minutes, 5, 10 up 20 minutes, finally it will shuts down

and also i tired install new OS of windows XP, installation process will run up to term and condition step or less or more, then automatically it will shut down

>recently i have removed the ram and harddisk
>also removed heatsink
>I have check all connection is properly connected
>I have not pasted thermal compounds,

please help me friends
3 answers Last reply Best Answer
More about shutting radamly
  1. Replace the Power Supply Unit with one certified for Pentium 4 systems.
    - The ATX specification has changed a lot since then, and some newer PSUs will not work correctly with that old hardware any more.

    It sounds like the PSU is as old as the rest of the system, in which case it's probably full of dust and nowhere near as effective as it was when it was brand new.
  2. Best answer
    Reason for system shutdown is to prevent more damage to hardware. Solution:buy a new heatsink with fan with thermal paste ,supported for p4.install the new processor cooler buyed. change the cmos battery.
  3. Best answer selected by thippesh.
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