Computer switches itself off and on and off and on etc. Hints please..

[crudeFool]

Hi

Just built myself a new PC, but I'm having an annoying problem.

When the computer is cold and I switch it on, it starts up for about 2 seconds, switches itself off, starts up again a second later, switches itself off again, starts up etc. This can go on for about 20-30 seconds before it boots properly. After that everything is OK.

I'm assuming that maybe once the problem component starts heating up, some loose connection "corrects" itself??? I've checked that all cables, cards, ram etc are pushed fully home, so maybe it's a dodgy PSU (it's a cheapy 600W one), but before I go blaming that if someone has some other hints it would be appreciated.

Cheers,
crude

 

[crudeFool]

Have to agree it sounds like the PSU. Which one did you get? Have you been able to try another one?

It's an EzCool 600W. My PSU got a slating in another thread where my CPU was overheating due to an incorrectly attached CPU fan.

My problem is that I need to prove that's it's the PSU - I haven't got another one to assert this. If I'm going to buy another one, I'd like to be able to return the EzCool to the local PC shop I bought it from.

The EzCool was a panic buy as I bought a load of new components (Conroe 6600, Asus p5b delux, 2G Cosaur DDR2, HIS X1900XT, 2 x Barracuda 250G Sata) only to find my old Antec Trueblue PSU didn't have the right connectors for my motherboard or graphics card. It was only 380W, so I rushed out to a local PC shop to get a PSU rather than wait 2-3 day for Overclockers / Scan to deliver my prefered PSU.

Regards,
crude

 

[crudeFool]

Thanks for the replies.

I'll give all the suggestions a try and let you know the results.

Cheers,
crude