I will give you the long way:
Go here and look at NUMBER 6 way of getting to SAFE MODE:
https://www.digitalcitizen.life/4-ways-boot-safe-mode-windows-10
(6. Interrupt the normal boot process of your Windows 10 PC)
When in the safe mode, try running SFC scan.
If everything fails, you might be looking at fresh install of Win 10. I hope more people will answer this. (brb in 30 min, gotta walk the dog)
Keep us posted on the results.