New
#1
After W10 upgrade revert to W8.1 on UEFI machine
Assume a computer with the UEFI firmware interface.
Assume that during or after a user has upgraded a W8.1 machine to W10 things go horribly wrong - Black screen, Blue screen, No screen. The user now tries to Boot from a USB Emergency Boot Disk that they previously created using the W8.1 utility and then they try to restore W8.1 from a System Image Backup (the one in File History) that they previously created.
Will this be possible and will the Product Key in the UEFI firmware allow a reinstall of W8.1 after a W10 upgrade...?
T.