Startup status bar choppy and then screen goes blank. Does not Boot
I rebooted my iMac to update to Big Sur 11.2.2 today and it did not boot back up. I unplugged and let it sit for a while and then rebooted it. The apple comes up and the status bar comes up but is not solid and choppy and gets about a 1/3 of the way and the screen goes black but stays powered on.
I cannot boot into safe or recovery to troubleshoot further.
iMac, OS X 10.11