So I installed the Windows 10 Build 10136 technical preview onto my Nokia 1520 and had some issues during installation.
After the phone did the initial sequence of downloading and then installing Windows 10 it seemed to be sitting and doing nothing for about 15 to 20 minutes with just a solid blue screen. So I performed a soft reset thinking that it was stuck.
After it rebooted I noticed the phone seemed to just hang again for over 15 to 20 minutes and did another soft reset.
During this I also started to install Windows 10 onto my Nokia Icon which I then left alone on the charger. A few hours later I checked that the phone and noticed that was up and running just fine. It even migrated most of my old apps and settings with no issues and the phone was operating smoothly.
It finally occurred to me that there is a glitch in the installation of Windows 10 Build 10136.
The glitch is that after a reboot during installation it seems to be loading the lock screen and just sits there
However it is still performing the installation in the background. All with the blank screen the phone loads but without any notification that the installation is still in progress in the background.
No progress bar. No text on the screen. THAT is the glitch in this build.
I likely interrupted the installation a few times when I performed the soft restarts and when I left it alone it finally finished but was glitchy.
So I used the Windows Recovery Tool to load Windows 8.1 back onto the phone and then installed Windows 10.
This time leaving it alone even when the screen was displaying nothing for 30 minutes at a time and eventually I got a nice clean installation.
Even Cortana works.
Video
https://youtu.be/VAfsFSEjQeo
After the phone did the initial sequence of downloading and then installing Windows 10 it seemed to be sitting and doing nothing for about 15 to 20 minutes with just a solid blue screen. So I performed a soft reset thinking that it was stuck.
After it rebooted I noticed the phone seemed to just hang again for over 15 to 20 minutes and did another soft reset.
During this I also started to install Windows 10 onto my Nokia Icon which I then left alone on the charger. A few hours later I checked that the phone and noticed that was up and running just fine. It even migrated most of my old apps and settings with no issues and the phone was operating smoothly.
It finally occurred to me that there is a glitch in the installation of Windows 10 Build 10136.
The glitch is that after a reboot during installation it seems to be loading the lock screen and just sits there
However it is still performing the installation in the background. All with the blank screen the phone loads but without any notification that the installation is still in progress in the background.
No progress bar. No text on the screen. THAT is the glitch in this build.
I likely interrupted the installation a few times when I performed the soft restarts and when I left it alone it finally finished but was glitchy.
So I used the Windows Recovery Tool to load Windows 8.1 back onto the phone and then installed Windows 10.
This time leaving it alone even when the screen was displaying nothing for 30 minutes at a time and eventually I got a nice clean installation.
Even Cortana works.
Video
https://youtu.be/VAfsFSEjQeo