- Aug 21, 2010
- 11,339
- 17,557
What year is your iMac?
I ask, because I had an issue with my '08 iMac where my bluetooth keyboard and magic mouse would lose connection to the iMac while I watched a movie. I had to end up restarting by holding down the power button. I ended up getting a wired keyboard and Logitech USB mouse and that stopped the issue.
Mid 2011. The issue started out by just losing connection for a few seconds, then it would reconnect. Then at times, it started to not reconnect in which I would have to restart it by holding down the power button like you. I googled the issue and tried all the suggestions. Nothing.