For some reason, my Bluetooth device disappeared from my Macbook Pro. When I clicked on the Bluetooth status and/ or went to check via Systems Preference – Network, it said my Bluetooth device was not installed.
Which was strange because it was working fine just before I shutdown the Mac.
I searched the Apple Support forums. There were a few similar problems reported and most solutions required a reboot. Specifically, I did this and it worked:

Resetting PRAM and NVRAM
- Locate these keys: Command-Option-P-R keys. You’ll need to press them once you restart your Mac.
- Shut down the computer, and then turn it back on.
- Quickly press and hold the Command-Option-P-R keys before the gray screen appears.
- Continue holding until you hear the startup sound for the second time.
- Then release the keys.






12 June, 2008 at 3:16 pm |
Hi,
I found this problem on my Mac Mini was down to overheating:
http://bluhaloit.wordpress.com/2008/06/11/solve-intermittent-bluetooth-problems-on-the-mac-mini/
13 July, 2008 at 10:53 pm |
Hey,
Thanks for the information. My bluetooth disappeared when I turned on my Powerbook this morning and this solved it. I had tried repairing my permissions before I tried this which didn’t help. So, not sure if repairing the permissions also had anything to do with the fix.
8 January, 2009 at 9:59 am |
[...] My Right Brian [...]
7 June, 2009 at 7:01 am |
Thanks for the tip. I have never had a problem with my bluetooth until I installed a wireless keyboard and mouse yesterday. Everything was fine until I shut down my computer at night. When I restarted this morning the wireless devices were not working and bluetooth missing. I followed your above instructions and everything is back on line.
Not sure if it will be gone again tomorrow though….lol, but for now all is good!!
14 June, 2009 at 5:02 am |
Nice tip! My mini lost the connection to the Bluetooth keyboard. I’ll find a wired keyboard, plug it in and give this reset a try.
9 July, 2009 at 9:48 pm |
Thanks for the help! I lost my bluetooth wireless mouse and keyboard when I updated my OS, but now it’s all working smoothly.
15 August, 2009 at 4:31 am |
Thank you very much for the help. I followed your instructions and the BT was there straight away after it went missing. I am a fairly new Mac user so I had no idea what was going on when I couldn’t connect my mouse.
Thanks again!
9 September, 2009 at 6:12 am |
This worked for me too. Thanks! I’d gone to the Genius Bar, and they thought it was a hardware problem. Glad I didn’t have it shipped out.
3 October, 2009 at 1:35 am |
Thank you so much for the excellent advice! My bluetooth mouse was working just fine until a few minutes ago when my mac said that it did not have bluetooth hardware installed on it. I followed your instructions and my bluetooth hardware magically reappeared!