I have a Late 2011 27" iMac that once a day loses all bluetooth connectivity. (Very rarely it will drop just the keyboard or just the mouse, but 99% of the time, it's everything) This is a huge problem because I only have the iMac bluetooth keyboard and mouse, so this basically renders the entire computer useless.

The only solution I have so far is to hold down the power button to force the iMac to power down, and boot it up again. Everything works fine after booting it up, but I can guarantee sometime in the next 24 hours it will happen again.

Turning the mouse on/off, taking the batteries in/out and doing the same for the keyboard has no effect. The light on the bottom of the mouse blinks, but that's it.

It is not the battery levels; brand new batteries make no difference. On the rare occasion when it is just the keyboard that drops out, I can get it back by disabling it in the bluetooth menu and re-enabling it. Of course when the mouse drops out I've no idea how to use the keyboard-only to achieve the same actions.

Do I have a faulty iMac? I've only had it for less than 3 months, and although this did happen once or twice when I first got it, it was rock solid until the latest OS release that I upgraded to (Mountain Lion? I always forget those ridiculous names).​​​


I have two Macs that have recently started doing the same thing since an OS X update. Apple exchanged my keyboard on one machine but it still kept happening. I note that in the latest OS X update (today 11 April 2015) that Apple have addressed this issue. Perhaps now it will go away.

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .