I installed CCleaner on a Win11 PC. During first update, the screens went blanked during the software update phase for iPhotos or iTunes or iSomething. That was 20 minutes ago. The PC is STILL powered on, and “hard drive” LED is still flashing. I’m not sure if I should reboot or wait a bit. Is this a bug??? Suggestions?? Thanks. Rick.
As the drive light was flashing, indicating drive activity, then it sounds as if the update was still ongoing.
As it’s 13 hours since you posted then I guess that either it completed or you pulled the plug on it?