I tried going directly from Win 10, version 1607 to Win 10, Version 1511, and it worked! I did end up having to call Microsoft (800-642-7676), joining their "Assure Software Support Plan" (149.00...

Thanks for posting a solution mgasparri!

Might I ask where you found copies of Windows 10 version 1507 and 1511? Also, I'm wondering if I could just go straight to installing 1511 without going...

I thought that the problem was just on this one computer we recently obtained, an off-the-self, stock HP notebook, model# 15-AY014DX purchased from Best Buy, so I'm actually kinda glad to see that...

Same problem here