Just started today. Was able to let it automatic repair and boot up. Was on for like 10 hours, shut down and tried to boot up some hours later. Now its completely stuck on automatic repair. Have unplugged all additional hdd's and then all unnesscarry USB's. Still doing this. Also removed my ethernet card. Still the same.
I cannot lose my data. I have several SSD's and HDD's with important files across several of them.
Well, if that is the case, the good news is motherboards are one of the more not-so-expensive replacements: Definitely cheaper than a cooked processor or even bad RAM these days.
On a related note: It's worth springing for a quality power supply if you don't already have one to make sure your next board doesn't get cooked too.