Currently Being ModeratedDec 8, 2012 10:08 AM (in response to AliWonder)
It is wise to have a backup keyboard, get yourself a cheap $10 USB keyboard for emergencies like this. Try removing the batteries and re-insert. Then do a SMC Reset (Google for Intel iMac SMC Reset) and then restart normally, the keyboard should be found an enable you to pair it.
Currently Being ModeratedDec 8, 2012 10:09 AM (in response to AliWonder)
First see > How to install batteries and make sure that you are installing the batteries in the correct direction.iMac, Mac Mini, iPad, iPods, Mac OS X (10.6.8), (10.8.2), Safari, iTunes, iPhoto
Currently Being ModeratedDec 8, 2012 10:23 AM (in response to den.thed)
Of course i've installed the batteries correctly! Obviously the first thing I checked - even tried inserting them the other way round as well. What is an SMC reset? Sorry i'm struggling here on a tiny phone. ( yes now i'm in Apple world I guess I need a spare keyboard - never needed one in 15 years of Windows!)
Currently Being ModeratedDec 8, 2012 10:45 AM (in response to AliWonder)
What is an SMC reset?27" i7 iMac SL, Lion, OS X Mountain Lion (10.8.2), G4 450 MP w/Leopard, 9.2.2