Well, not so smooth here...that's a real surprise!! My first few tries to install failed at first reboot, and the second failure left my boot files corrupted. Fortunately, but Gigabyte UEFI dual bios has an option "windows boot manager". I thought there might be help there-and when I click the option, the computer boots to windows!!... but I can't boot without going into BIOS..
Per MS, tried to repair with my Win 7 disk but it reports "installed version is newer" and only a complete windows install is offered--not quite ready for that, but I had backed up.
As you did, Jon, I downloaded the ISO and updates, then tried to install Win 10 (rebooting 3 times with my BIOS workaround). And it installed!! But I still can only boot through my BIOS workaround
I like Win 10--all works well (tho I get reminder that my upgrade is available each time I start!!)
Today I'm creating a Win 10 restore/repair USB drive and will see if I can fix this. Alas, I suspect that I'll be reinstalling Win 7 and all my programs next vacation....
By the way, my black screen boot up message
Windows failed to start as a result of hardware (none) or software change.
Directs to use Win 7 disk with repair option (which does not work)
Status: 0xc000000f (an error which occurs when update/installation fails and boot file is corrupted), not unique to any version of windows
File \EFI\Microsoft\Bood\BCD
Most of me wishes I had just stuck with my happily working Win 7. But, even with my crippled install, I really like Win 10. I think everything works well--maybe even better. The interface is fine.
But, if I two days ago what I was looking at, I'd be using Win 7 still....
Gary