Another GA-Z77X-UD5H that won't POST (mbios + bbios led flashing)

[Thegide]

Hello all,

I was running video benchmark software (FFXIV:ARR) this morning and boom... PC shut off out of nowhere.  Now it won't boot.  I can get power on, and my system sounds like it starting up, but the mbios and bbios LEDs are flashing, and no BIOS LED error code is displaying at all.

System:  

Intel i7 3770k
PNY GTX670 2GB
GA-Z77X-UD5H
8GB Kingston HyperX 1600mhz DDR3
OCZ 620W modular PSU

System was running stock (no OC).  Any help here?

[Fatman]

Reset your Cmos and try again.........

[Thegide]

Issue solved.  I blew a rail on the power supply. 

[Fatman]

Glad you got it sorted :-)