Seems to me there is a big problem with the new Apple OS upgrades killing Bluetooth! In my case on my MacBook.
I've been struggling with this for 2 days, since I upgraded to 10.8.5 which I needed to go to get the latest iTunes, which I needed to upgrade my iPhone and iPad to IOS7 . . . yes, right down the garden path I walked
MacBook Pro 17", early 2009.
After the 10.8.5 upgrade Bluetooth is Not Available, same as seanluck13.
-System Preferences: no sign of Bluetooth
-System Search: no sign of Bluetooth
-System Profile Information: Bluetooth: No Information Found
-So Bluetooth is absent, removed, not present -- AGHHHHH!!!!!
Apple BT keyboard and trackpad can't be used. MacBook trackpad is worn out and I get wrist strain trying to activate it!
I read on a forum that a fix was to reinstall the system over the internet after a CMD-OPT-R restart. Did that -- 5 HOURS LATER -- NO CHANGE, BLUETOOTH STILL ABSENT !@(%&( )TY(@Q#*!!
Please someone help me before I throw this Mac down the garbage shoot. At the moment that's only a fantasy.
Tonight I tried install , but ........
OS X Mountain Lion 10.8.5 Supplemental Update
Fixes an issue that may prevent certain USB Bluetooth adapters from working
Still waiting Apple response to solve problem without formatting or back to 10.8.4 (impossible for me -no backup)