Is your PC connected to a surge protector
I have a maximus VI formula, had a power outage and had the motherboard
A. Rog led flashed as if the PC was sleeping till I powered it on, then went to its normal solid again
B. Had the 00 code and it wouldn't boot
My guess was my surge protector saved it, I needed to use the clear CMOS button a few time and tried to boot a few times, once I got it to actually boot once, I shut it down the correct way and since then its been fine
This is just my experience, may not help you at all, also I'm no expert
My personal guess to the matter is the error probly sticks, as I said I have a surge protector and I only lost power for a fraction of a second so it surprised me it wouldn't boot
After seeing many threads about bios settings and other bios things getting stuck, even after clearing CMOS, I've even experienced it myself
Lead me to believe maybe the lose of power is causing an error that's getting stuck and as a safety feature is disabling booting
Again I'm not an expert, just my best guess on what happened to my rig and possible why resetting the CMOS multiple times and trying to boot multiple times caused it to eventually clear it and work
Also when dis charging the system, and clearing also be sure after you remove the power cord from the power supply so there is no power at all, hold your power button for about a minute, that should cause it to discharge faster, then maybe even just leave it with no power after you held the button, maybe 30 minutes, just give yourself the best possible chances
After that time period try the clearing CMOS and boot, clear CMOS and boot, for me personally took 3 time's, I'd also say you may want to be careful in doing it to much as it may corrupt the bios in which case you'd then need to bios flashback and since you have no display you'll kinda be more lost lol
CoolerMaster HAF 932 Advanced/ Maximus VI Formula/ I7-4770K/Swiftech H320/ Corsair HX850/ G.Skill Trident X (2x8) 16gb 2400MHz/ 2x 840 EVO 120gb(Raid 0)/ WD 1TB HDD (Backup/Storage)/ EVGA GTX 1gb 560 TI/ Asus 12x bluray combo