Thanks for reporting back. It may help someone eventually.
When messing with hardware, especially connections, afterwards I reset BIOS settings, then reload one of the saved settings profiles or set everything up the way I like it manually, depending on what I've been doing. Maybe that old habit is now redundant. Weird how it reset some settings on its own, but that seems to be happening to others recently, so it's smart to have those profiles. Nice to know nothing died on you. Good you had it backed up though, always smart.
CRO AIR SLI ROG RIG:
PCMark 7: 6671 3DMark 11: P16718, X6969
MBo: Asus Maximus V Formula CPU: Intel i7-3770k (@4.6GHz)
RAM: Corsair Dominator GT (4x 4GB 2133MHz 9-11-10-27-1T)
GPU: 2x Asus GTX 680 DirectCU II OC in SLI (@1200MHz)
SSD: 2x Corsair Force GT 240 in RAID0
PSU: Corsair AX1200 Cha: Lian Li X500FX
Coo: Prolimatech Armageddon Fan: 5x Prolimatech Vortex Aluminium
Mon: LG IPS235V Cam: Logitech C920 Spk: Logitech Z906
Kbd: SteelSeries 6Gv2 Mou: Cyborg R.A.T. 7 Mat: Razer Sphex