Honor 7 Video is just grey lines

Hi,

My Honor 7 PLK-L01 has lasted three weeks before spontaneously switching to a series of vertical grey lines on the video. Reboot doesn't change this. The lines and brightness go dark and then change during the reboot. I know it's still running the OS as I can contact the phone. But rebooting doesn't change anything.

Has anything seen anything like this and have any suggestions? It looks like a hardware fault on the screen/video circuitry to me, but open to suggestion

[GUIDE] FIX screen flickering on grey images

some users like me have this problem so after some investigation i found a temporary fix ( im still trying to get rid of it permanently).
so for now:

from phone go settings>developer settings>advanced and there disable hw overlay and enable gpu rendering, done :D

its temporary because hw overlay dosent stick after a reboot.