Well, it finally happened to me. Reading there was a new update available I re-enabled Google Play Services. Did an update check. Nothing. Went to turn it off, later, light went off but display stayed lit. Unplugged, counted to twenty, plugged back in. Now all it does is what you see below. It's almost a relief. Now I can toss the verkakte thing and replace it with something that's not electronic garbage.
In case, you are looking for a fix
Install full Oreo image on recovery and you should be back to normal again.