New
#11
I think, at this point, if you can post a picture of the screen at startup, it would help us to determine if a real WU is trying to install {displaying the message "do not turn off your computer"=Normal} or it's a fake message generated by malware {red box=Not Normal}. Take it with your phone, if screenshot is not possible.
If you could get to System Restore, that tells me that you can get to the RE, so Safe Mode will be under Startup Settings in Advanced Options