The simplest fix would be to boot the recovery media for this PC and start over.
After 2 years of moderate use, my Asus K501UX - Win 10 suddenly showed a blue screen, stating (my translation, the original was in Spanish, see image below):
The hardware or device needs repair
The header verification checksum of this file does not match the calculated checksum.
Error code 0xc0000221
You should use recovery tools. If you do not have installation media (as a DVD or a USB device), contact the administrator or the manufacturer of the equipment or device.
Press Enter to try again
Press F1 to go to the recovery environment
Press F8 for the boot configuration
Press ESC for the UEFI firmware configuration"
After that, I turned it off (by pressing the power button for >10sec). Then when I turn it on, the green battery light keeps blinking, with a dark screen. Nothing else happens.