Bluetooth only works after restart

Hi Anna,

Do you have a 27" imac?

I bought a new one and have spent a total of over 20 hours on the phone to apple care. After a month I return two different imacs, and am now on the third.

After giving me the wrong suggestions for a month, apple care now, this is right, now, not a month ago, tell me they have discovered a 'known issue' whereby new 27" imacs with certain configurations lose their bluetooth connectivity if an OS update is made to el capitan ! I can't think of any other product you would have such a problem with even though you bought it brand new.

Hi Anna

Just had exactly the same problem with a brand new iMac straight out the box. No bluetooth from cold start, wasn't showing up in system profiler or system prefs, but restart and it appears.

This worked for me and I've not had issues since, touch wood. You need to reset your NVRAM. Hold down Command, option, P and R and start the machine up, keep hold of them until you hear it chime twice. Let go and it will chime again and should boot fine with bluetooth fixed.

hope this works for you.