I tried to upgrade from win8.1 to win10 while on win8.1 using internet win10 download and install. I know now this is not recommended. Things began really slowing down when I began 2nd step of 3 of installtion. The backup of win8.1 to my usb drive went ok. The process came to a virtual standstill in middle install step. So I powered off, rebooted, and tried it again with similar results. After these two attempts I noticed a couple of things. 1.My win8.1 recovery partition was missing and 2. my win8.1 backup was corrupted. I can still boot to win8.1 but I think it is crippled. I did not make my own backup of win8.1 (big mistake). I tried to get intel to ship me a win8.1 with Bing image but they said I would have to exchange the entire compute stick. I have really fouled things up. I guess I can try to upgrade to win10 using removeable storage instead of internet like I should have in first place and hope that works.
Thank you for joining the Intel communities.
I will recommend the following and this has worked for other customers:
Update the Intel® Compute Stick BIOS; please download the latest BIOS version for this unit at:
https://downloadcenter.intel.com/download/25506/BIOS-Update-FCBYT10H-86A- Download BIOS Update [FCBYT10H.86A]
In this case I recommend doing a BIOS recovery and you can follow the steps at:
http://www.intel.com/content/www/us/en/support/boards-and-kits/intel-compute-stick/000005902.html Intel® Compute Stick BIOS Recovery Instructions
After the BIOS update is done please make sure you have all updates for Windows 8.1 and follow the steps at the following link to upgrade to Windows 10.
http://www.intel.com/support/motherboards/desktop/stck1a32wfc/sb/CS-035724.htm Intel® Compute Stick STCK1A32WFC — Windows® 10 Upgrade Instructions