PSU question

[Kilkus]

Hey all

just a small question, when ever i boot up my computer the psu will power up for a few seconds then power off, then it will power up again and boot the computer.
Just wondering if this is normal as i've never encountered this before on any computer.

The PSU is a 500w Earthwatts one which comes as standard with the Antec sonata 3 case/

cheers

 

[Kilkus]

Hmm two completly different answers, i'm hoping the 1st is correct tho

anyone else care to add there advice, just to add its the same on every boot, powers up and off for the same amount of time, then powers up again.
It never fails to boot the computer, just has this rather weird routine.

ideas?

 

[Kilkus]

Hey thx for all the replys, the motherboard is a Abit IP35 (Socket 775) PCI-Express DDR2 Motherboard i've only had it a few days at most.

since my last post i've been reading a few threads and searching the web, someone mentioned it here. if i turn the mains off, the computer will do this startup procedure with the psu. If i then run the computer and shut it down but leave the mains on, then the next time i boot the computer it will just boot straight up without the psu bit. I'm guessing this is the reason here, never thought about it being the mains, usually just switch all plugs off to save money (student ) and only boot the computer once a day in the morning.

i hope this is the issue anyways

any more replys are much appreciated

thx in advance