After spending the ENTIRE afternoon going around and around in a petulant frenzy trying to get windows to boot, I want to post a question before I head for the adult beverages. After trying many command prompt entries and automatic bios copying... how can I be sure that the backup files for windows are intact so that the NEXT time something happens, I know they are good? It was all: rename this, and create directory that, and copy this to there! Things were really messed up. I was ready to boot from my brand new Windows 10 USB, but it didn't show up on the boot menu! That's when I panicked. But after a few more random command line entries and reboots, Windows came back. I just don't feel... clean. Anyone have a comment on this? Thanks in advance.