PSU 12V rail spiked to 20V

[grammitt]

I have a Corsair HX750 that I've been using without problems for almost two years now. Today the 12V rail on my power supply just randomly spiked to 20V, returned to normal, dropped to 0V, returned to normal, and has stayed at normal for a while now. (http://imgur.com/OveiLom) This morning I used the Asus overclock utility to oc my cpu from 3.4GHz @ 0.9V to 4.2GHz @ 1.15V. I did the same overclock the same way before almost two years ago when I built my computer and had it at that speed up until last month when I updated the BIOS, which resets the overclock parameters. I can't find any information about this anywhere else and this is making me very nervous.

Specs
CPU: Intel i5 3570k @ 4.2GHz @ 1.15V
CPU cooler: CM Hyper 212 EVO
Mobo: Asus P8Z77-V PRO
RAM: Corsair Vengance 8Gb 1600MHz
GPU: 2 Sapphire 7950s in crossfire
SSD: Samsung 830 EVO 128GB, Samsung 840 EVO 250GB
HDD: WD Caviar Black 2TB, WD Caviar Blue 1TB

PSU: Corsair HX750 750WRK

[Valhallatier]

don't trust voltage readings, its digital. you need a processor purely to read voltage like corsair i series, using corsair link. other than that its probably false.

[xmx1024]

Kill it with fire.

 

 

EDIT: you won't have to kill it with fire, it will kill itself with fire.

[VirtualNinja]

Asus's AI suite will do that occasionally nothing to worry about

[marioo1182]

A resistor would have had to blown if the voltage or whatever spiked? If this happened however you would

probably smell burning and it wouldn't go back to normal.

 

Probably software error, wouldn't worry about it too much.