Quick issue: PC keeps turning off on boot

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27 Apr 2009
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592
Hi guys. Really quick one here, and admins please feel free to move this where you may see fit, sorry if it's wrong.

But anyway,

When I turn my PC on from cold, i.e. power cut to PSU at wall socket, it's started turning off straight away, taking a second, then clicking on and all is well.

What's this?!

My friend's new build last week has done it from new also. Specs in my sig, but is it a Superflower thing? We both have Leadex PSUs, mine 750W and hers 650. Plenty of power to go around either way.

I power on, everything spins up for a second and dies straight away... then a moment, then it pops on again and starts up.

The only thing of note is that the graphics card spins up loud at 100% (I'm guessing) until Windows boots and the drivers load up... it never used to do this.

Any ideas?

PC has been stable recently; no issues that I'm aware of.
The only thing I've done is uninstalled/reinstalled various Nvidia graphics drivers because I've been taking 560Ti and 580 in and out for testing over a few days.

What do you think? Thanks in advance.
 
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