PC Turns on, won't boot. 'b2' on mobo, 'A2' on boot screen when it finally does boot. HELP!

Ricketycricket

Reputable
Jun 5, 2015
2
0
4,510
Having a really annoying issue. It started about 2-3 months ago. I would attempt to power the PC up. Fans start, lights come on, no flashing lights, displays stayed blank. I'd try a couple more times and it would fire up and run fine. It's gotten progressively worse and I finally noticed the 'b2' code on the LED on the MSI z97 Gaming 5. I also noticed, when the thing finally fires up, 'A2' at the bottom right of the main display when booting up. I'll go through the on off cycle as many as 50 times now before it will boot. I've updated by graphics drivers. I've updated the mobo bios. I updated windows. I ran Samsung Magician test. All good. Only thing left in Live Update 6 scan is sound blaster stuff. Any insight is definitely welcome. Yes, I've read through other posts somewhat similar to my 'b2' issue and found nothing useful.
MSI z97 Gaming 5
Gigabyte gtx970 windforce
4790K
Samsung EVO SSD
Windows 10

Update: So I unplugged my second display. (HDMI to GPU via dvi adapter). The problem is gone. If i plug the display back in, error comes back.