First make sure the keyboard isn't currently connected to another device (iPad, another Mac etc)
Then turn the keyboard off by holding the power button 5 seconds. Go to System Preferences > Bluetooth > click the "+" icon below the list of devices. Now tap the power button once on the keyboard. The green light should flash and then found by the setup.
I had this problem tonight. Earlier on I had enabled Mouse Keys > Accessibility > System Preferences and the effect was to disable the wireless keyboard keystrokes even though it was paired and the batteries were showing 95% charge. Unchecking Mouse keys restored the keyboard functionality.
Hope this helps.
My wireless keyboard decided not to work after 3 years. I tried new Energizer batteries as I normally would but still wouldn't turn on. I went to the local Apple service centre expecting to have to buy a new keyboard. They tested the keyboard with Apple batteries and it worked!!I don't know why batteries I've always used didn't want to work. Anyway the good news was Apple rechargeable batteries are $30 for a charger and 6 batteries - problem easily solved and no more paying for batteries.
I have an Apple Wireless keyboard that I bought last May when I bought a Mac mini. I only used it a few times and I did get it to work. But then I guess I must have accidentally left the keyboard turned on because the batteries burned out fairly quickly. I've tried different batteries in it, including the Apple batteries after a full charge, and nothing seems to work. I've tried inserting the batteries positive side in, and positive side facing out, and it makes no difference. Does this keyboard have a light on it or anything that might indicate whether it's "on"?
Meanwhile, I can't use the Mac mini because I have no keyboard for it. (I use a different Mac instead.) Is it possible the keyboard is just defective, and if so, is it too late to return it? Or is there some special trick to getting it to turn on (besides pushing the button on the side)? It's cute as a button, but basically just a paperweight.
Try this simple solution, at least it works in my case.
Make sure your wireless keyboard hasn't been paired with another device before. If it has been, you have to go back to that device and unpair it. This is what happened in my case.
I previously had my Apple's wireless keyboard paired with Google Nexus 7, and it was working fine. Then I recently bought my iPad mini, and thought this BT wireless keyboard would be a perfect match for iPad mini, right? Wrong. To my surprise, no matter what I tried, the two devices failed to pair. I thought about it so hard, and I thought my keyboard is a goner. Then I went to this forum, read a few more of this discussion, but none seems to help. Then it occurred to me, perhaps I should decouple my keyboard device with previous device Google Nexus 7. Doesn't make sense though, I thought, since my Google Nexus had been off all along. Anyway, because I was desperate, I tried my way out anyway. I went to my storage place and pulled out the Nexus 7, turned it on, and it paired with my keyboard immediately. I then used Nexus 7 to unpair it with the Apple's wireless keyboard. After unpairing, I turned off my Nexus 7, and proceeded with iPad mini - wireless keyboard pairing.
At first, my iPad minin's blue tooth kept spinning and couldn't find the keyboard. Not discouraged, I held the button on the right side for 5 seconds until the green light go out to make sure they keyboard is off. Then with a flick of a second, I pushed the button to turn the device on. Immediately, iPad minin discovered my wireless keyboard. I proceeded with the pairing. iPad mini gave me a four number code. As I entered that code, the my wireless keyboard zoomed to life.
I hope this help. This is the answer for pairing iPad with Apple's Wireless Keyboard, but I believe the same principle applies to iMac as well.
I had the same problem. My apple wireless keyboard suddenly stopped working. The battery was 100% full. According to the Bluetooth system preferences, the keyboard was connected, paired, and discoverable. Only two keys worked: the tab key and the delete key. I brought it in to the genius bar in Palo Alto. The genius tested it and found that it works well on his computer. He suggested it might be my bluetooth software. I brought it home and tried again. This time I noticed the following warning in the troubleshooting discussion (http://support.apple.com/kb/TS3048):
"9. If the mouse keys feature in the Universal Access System Preferences pane is enabled, many of the keyboard keys may not respond as expected." The resolution: In the Universal Access System Preferences, click on the Mouse tab. If "Mouse Keys" is "On," turn it Off. It was on; I turned it off. Now it works. I have no idea how "Mouse Keys" was suddenly turned On.
Had this problem just now and fixed it. Here's what worked for me. (Looks like LuuSang found something similar.)
PROBLEM: My mac apparently froze overnight. I tried to wake it this morning with mouse clicks and keyclicks, but eventually had to do a hard restart. When it came back up, it recognized I had a wireless keyboard, but would not connect to it. I tried everything, including deleting the device from the bluetooth menu.
Turned out, it couldn't connect the keyboard because my APPLE TV device had already latched on to it. (And worse, my keystokes had initiated an unintentional upgrade !)
SOLUTION: Once the upgrade completed, I powered off the Apple TV, came back to my mac, readded the keyboard as a new bluetooth device and went through the discovery/pairing process - and now everything is honky dory again (...also a great album by David Bowie).
I had the same experience, with an old forgotten pairing. In my case with an Apple TV. For some reason I got to think of it and easily unpaired the AWK from the ATV. However I was not able to pair it with my Mac Mini yet. Aaargh!! Not until I disconnected the USB keyboard I had been forced to use for quite a while. Then the dialogue with the pairing code appeared instantly! Tadaah!!
I had the same problem tonight. I rang Apple Care Support and they went through a whole range of "fixes" without success. They suggested I go to the Apple store and get a replacement. I then decided to turn the keyboard on its side and gently tap it on the desktop I work on. VOILA, the green light came on and it's working fine, obviously a loose connection somehwere. Give it a try if all else fails.
Yes, just had this issue, but you'll need another keyboard to solve it (buy the cheapest bog-standard usb plug in one you can find from any computer store if necessary).
1. Ensure the batteries are freshly charged and insert. Turn the device on with a single, brief push of the button.
2. Observe the green light. It should stay on for about 5 seconds, and then start blinking. If it's not blinking, remove the batteries and recharge them till the green light on the charge is on.
3. If you have any other bluetooth devices (iPad, iPhone, etc), go into their bluetooth settings and remove the keyboard from their list of devices if its listed.
4. On your mac, from the bluetooth icon in the menu bar, choose 'Open Bluetooth Preferences...'. If the keyboard is listed there, control click on its name in the window pane and choose 'Remove'.
5. Wait while the bluetooth manager searches for your keyboard again. When it comes up with a pairing password, type what it says on the bluetooth keyboard and press 'return'.
Hopefully, you'll see the status change to 'Connected'.