Hello!
I have a pc built some time ago that has been working fine up until recently. However it now won't POST.
When I power it up, all the fans spin up, lights come on, but after 1 second it all dies.
motherboard: Gigabyte z77x up4 th
CPU: i7 3770K
GPU: GTX titan
PSU: corsair HX850
RAM: 2x...