PC Weirdness - Shuts down during boot

[Atari]

Hi all,

I hope you fine people can help, I'm having some issues with a build I put together that's starting to annoy me but I can't figure out what's causing it, though I have a bit of an idea I think.

When I turn my computer on from dead cold, it frequently powers up and you can hear the drives spinning up, but before it's got anything on the display, it turns itself off. You can hear the drives spin down again for a second or two before it switches itself back on again and tries to boot a second time. 90% of the time it does boot on the second attempt.

Similar happens when I'm using the computer and reboot through Windows, the PC makes a clicking sound as if a switch has been pressed, everything turns off for about 2-3 seconds and it turns itself back on again and attempts to boot up.

Sometimes this happens 3-6 times before it boots up properly.

My spec:

Intel Core i5-2500k @ 4.1GHz
8GB Kingston HyperX Black
Gigabyte Z77MX-D3H
OCZ 64GB Vertex 3 SSD
2x WD 1TB HDD
Nvidia Geforce GTX 750ti
Coolermaster M2 500w PSU

I feel as though it's the PSU causing it to happen but I've got no real way of testing it before attempting an RMA (if it is indeed the PSU). I've tried going back to stock clocks and get the same problem. I also don't have any beep errors.

Can anyone shed any light on this issue please?

Thanks.

 

[Danny75]

I've had something similar to this happen in the past and re-seating the CPU did the trick. So that's one thing I'd do, at least to eliminate it as the cause (which may likely end up being the PSU as you suspect).

 

[Confused Stu]

I had the same double boot issue for months and just wrote it off as "something the PC does". A couple of months ago I reconfigured my overclock and, this time, did not enable "Internal PLL Overvoltage" and I haven't had a single double boot since.

Point being, might be worth removing the overclock for a bit just to see if that fixes the problem. If it does, play with the settings until you find the one causing it, if it doesn't then at least we've ruled that out as a possible cause.