Windows won't boot after a power outage

In safe mode you should open an admin command prompt and use the

Code:

DISM /online /cleanup-image /scanhealth

command to check the state of your Windows OS files. Chances are pretty high that something got whacked when the power fault occurred. This will tell you for sure if my speculation is correct. You can read more about this and other related commands in this TenForums tutorial: Use DISM to Repair Windows 10 Image.
Let us know what turns up when you do this, and we can recommend further or proper repair strategies. If DISM won't do the job, an upgrade repair install will probably be the next suggestion. If something hardware related is at fault -- a definite possibility, given your error code -- other strategies will come into play, too.
HTH,
--Ed--

Is this what you see ?


It's caused by an incompatible driver, in many cases the video or graphics (almost certain, in your case with a black screen). In safe mode, try a System Restore point if you have one, since it was working before the outage. Otherwise,
Here is a fairly recent forum solution that may apply to your situation. You can use 'zbook's' instructions to narrow down the problem in your device. - Machine Check Exception Win 10 BSOD
Do a search on the forum for 'Machine Check Exception' if this one does not fit your situation.
If you don't want to go thru all this, download a Win10 ISO onto a flash drive from another machine,if you can't on yours, ( http://bit.ly/2o0eTo6 ) plug it in, and mount ISO, then run setup.exe and do a Repair Install which will overwrite the system and let you keep your programs and files. Good Luck.

There's that repair install I mentioned! Here's the TenForums tutorial that explains how to do this: Repair Install Windows 10 with an In-place Upgrade Installation. This is actually my go-to strategy for fixing semi-serious Windows problems (or worse). Your reported problem totally qualifies for that kind of characterization. The great thing about an upgrade repair install is that it leaves your files and installed applications unchanged, and requires less post-install cleanup work, tweaking, and tuning than a clean install would.
HTH,
--Ed--

Repair Install would be the fastest option: Repair Install Windows 10 with an In-place Upgrade Installation Upgrade Tutorials

Many years ago having the power outage problem, all it took was setting the bios to default again.


Whether that will solve your problem is a maybe but it shouldn't hurt anything.

Jack

I agree that applying a repair install beats spending hours in diagnosis. The only thing is that a repair install won't fix problems with hardware , and the error code seems to indicate your problems may be hardware related, or perhaps related to driver damage from the power fault you experienced. A repair install will re-install all your drivers, too, so it may not be a bad thing to try if you can't find the source of your HW issues. I'd suggest launching reliability monitor and looking to see if it reports any hardware errors (type "reli" in the search box and an item named "View reliability history" should come up). If you're lucky, you'll see something like this:

You can expand the error info, and get more information about what caused it. It's unlikely, but if you report errors in Reliability Monitor, Windows itself may even recommend a fix! (I'm batting a big fat 0.0000 on that likelihood myself.)
HTH,
--Ed--