I have XT912 running stock 9.8.20-72_vzw-15-5_CFC from a FXZ using HoM4.1. All apps are as flashed from HoM, except PlayStore and Gmail, which were updated. The phone seem to be running slow, so I cleared cache I using stock recovery. At reboot the phone appeared to try random pin patterns to unlock. Next, emergency numbers screen appeared with random numbers being selected by the phone. This screen showed safemode button at bottom left of screen. The screen would not accept any input. The only buttons lit were the search and go back features - home and menu keys were blacked out.
I did a FXZ keeping user data, same result. I tried a FXZ full wipe, same result. I turned the phone off, activated another phone and hoped morning would bring better thoughts.
The next morning the screen was backlit. When I tried to turn the phone on the top 25% of the screen was white and the bottom 75% was green. Droid startup sound and vibrate notification are present but nothing else.
The phone will boot to AP Fastboot; I tested via computer as screen is black. When charging, there is an initial backlight then nothing. Internal SD is present and viewable on computer. However, apps from previous downloads are still present in spite of fresh FXZ.
I appreciate any help.