Corsair link anything and Asus software causes issues but I'd think you should still get into something
As for the system I have the same board and CPU and A0 is what the board displays when its running, I'm playing a game as I'm typing this and the board displays A0
So my question and it may sound dumb but, when you try booting whatever way gives you the A0 did you then try to change inputs in our display, cause sometimes they'll think there's no connection and switching sometimes fixes ( example you try to boot and see A0, change the display to anything else then back, HDMI 1-2 or VGA back to HDMI or whatever setup you have, maybe even turn the monitor off and back on)
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