No idea how to get there.In Control Panels/Backup, there is an option to build a Win 10 boot/recovery disk.
I knew it was one of the function keys, but it's been so long that I couldn't remember which one.Try booting in Safe Mode yet? During restart - when you see the Windows Logo first appear, hold down the F8 key until it displays the Safe Mode option.
Do you have a Recovery Partition on your HD? Most WIN10 systems are set up with one. If so you might be able to back out of the last WIN10 update.I knew it was one of the function keys, but it's been so long that I couldn't remember which one.
Also: I got it to boot up in safe mode, so now to get my files backed up and/or stripped off before I use it for target practice.