Windows 10: Unable to boot: No boot options

I have dual booted Windows10 and Ubuntu 14.04, which has been working properly for about two weeks. I then had issues with grub (it would boot straight into Windows), which I fixed using boot-repair on my Ubuntu installation usb. After fixing that and checking to make sure both Windows and Ubuntu work, I continued working from my Ubuntu side for 6 hours. Everything worked. I shut off my computer properly for the night and when I booted it up again this morning it went straight to BIOS with no boot options. Can someone please help me?

:)

 

Windows Phone 8.1 update on Nokia Lumia 925 error 80188309

Same problem.

With Lumia 1520 (Dutch phone with os v. 8.0.10532.166).

First downloading, than preparation (where 96% takes a bit looonger)

Than it starts installing, at 2% is suddenly gives the famous error..

 

Windows 10 Product Key Blocked

I had the same thing.

I did the Windows 8.1 to Windows 10 upgrade and activated Windows 10 successfully. I then downloaded the media creation kit, created a bootable USB and did a fresh installation of Windows 10. This second installation would not activate and told me the key
had been blocked.

I spent about two hours on the phone to Microsoft who failed to get it activated. It's been escalated to their tier III support and I'm getting a call back this evening. I'll come back here and report how I got on.