Wireless keyboard won't turn on after changing battery

I'm pretty sure we all know where the Power Button is! After having used the Keyboard, & it just stopped working when changing the Battery or for no apparent reason at all. 🙂

I have this exact same problem with my aluminum wireless keyboard. I, too, have tried multiple sets of brand new batteries and have confirmed that they're in and seated OK. The keyboard is just stone dead.

Possible fix to non pairing blue tooth devices.....

I have a BTMMouse- quite new. The original lithium batteries died and I replaced them with alkaline. It would connect but refused to pair. Went on the MM discussion board which had over 300 similar problems with both MM and BT keyboards, with absolutely no solutions from Apple or anyone!

I have an Apple Care plan, so I called and was told to shut down. Then remove the power cord from the back of my iMac, wait one minute, plug it back in. Fire up, and then attempt to set up a new device in BT. It worked on the first try. Then to double check, I shut down and restarted and the mouse stayed connect and paired!

I didn't even change the batteries and this happened.

The keyboard was left switched off whilst I was away for three weeks. Upon my return, I switched the keyboard on and found that the power light no longer illuminates and the computer can't see the keyboard. Putting in brand new batteries correctly didn't solve the problem.

Has anyone worked out a solution other than replacement of keyboard?

Same thing here with an Apple wireless keyboard on my mac mini that was working perfectly fine. Got the battery low warning, but had to go on trip for a few days, returned to a dead keyboard that will not even turn on--have tried several sets of brand new batteries to no avail...stone cold dead and I didn't do a thing to it. Pretty obvious there is a bigger problem with these.

Same here without even having been turned off for some days: Just after the "low battery message" I replaced the three batteries, put in right direction, and does'nt turn on. Tried three distinct sets of new batteries, different brands, no turn on. Some say keyboard firmware should be updated, but how does one do it without turning it on ? Will call Apple Care.

Hello: I just bought the aluminum Apple Wireless Keyboard MB167LLA. I found problems with the instruction manual (who writes this stuff?)

1. It apparently assumes i'm installing this with a brand new computer. It doesn't address the most common (and logical) condition of having a working machine up and running. You do not get a setup assistant when you start up a machine that has already been set up.

2. I did the update and also the firmware update (blue tooth or keyboard was murky) which the detailed instructions in this support site that i looked up later indicate aren't necessary.

3. The light came on and flashed in a couple of instances but once i got the "Congratulations" message it went out and would not turn on again

4. Only way i could get back to a semblance of hope was to remove the batteries and reinsert. I noticed that the "setup assistant" (actually in the keyboard preferences) under device select shows my keyboard name and a green batteries bar so i must be paired. But the keyboard will not turn on.

5. I have come to the conclusion that the keyboard must be defective out of the box and plan to ask for another or a refund.

Any other suggestions???? Like how do i undo any stuff that i did wrong?

Mine is dead 😟 I guess I'll call apple support tomorrow. I haven't used it in a few weeks, and I've tried 3 new sets of batteries to no avail. The power light never turns on to indicate that it's working.

Edit: Never mind, I tried a set of non-rechargeables and it worked! All three sets of rechargeable batteries are good (verified in my charger), very odd!

Message was edited by: Shaun Guth

I had the same problem. Check inside the battery compartment - there might be a small plastic cap in there that blocks the battery from making contact with the metal at the other end. Try removing that plastic to get the keyboard working again.

Hope it helps.

Exactly the same problem here,
White Extended Wireless Keyboard..
Updated to 10.5.6
Restarted Mac;
Received the Low Battery Warning in Keyboard,
Replaced batteries, initial flash of green light and then nothing,
Now will not turn on,
Have tried many different types of batteries, Eveready, Duracel, Energizer and same story,
no light coming on...
I have the exact same Keyboard wired so no big drama but upsetting,
I treat all my hardware like a gold,
I have UPS's on them, everything to maintain their life span.
Would also like to know what is going on..
Come on Apple respond to these posts..!

I've had the same problem. The low battery message came up, I unscrewed the metal cap on the battery compartment, let the batteries come out, and for the first time, I discovered this grey plastic cap, that for some reason came out together with the batteries. I didn't know how to put it back, and figured it had to go first, and the three batteries second. I must have done it wrong, because my keyboard won't power up anymore when I press the power switch. And now, this **** plastic cap is stuck at the bottom of the battery compartment. No way to remove it. I put it with its hole facing down. Should I have placed it the other way around? Has anybody found a suitable way for removing it?

I also had the same problem - it wouldn't turn on after changing the batteries 3 or 4 different times, nor would it keep a connection/pair with my MacBook. Called Apple Care, and talked to 6 different people - neither knew what was wrong, so sent a replacement, and arrived the next day. When I received the replacement, it was the white, plastic wireless keyboard with the numeric keypad on it, which was the wrong keyboard first of all. Called again after opening the wrong keyboard, and hopefully they send the RIGHT keyboard to me. Also was charged $ 59.00 temporarily for returning/exchanging it, even though it is covered by my Apple Care Plan. DOESN'T MAKE SENSE APPLE.

I ran into a similar issue tonight. My keyboard is pretty much left on all of the time. Tonight I came home and it was not working and new batteries did not help either. On closer inspection of the contacts in the battery compartment I noticed a slight dis-colorization. A little scraping with a razor knife and the light comes on again. The problem in my case appears to have been a little oxidization of the battery contacts.

BTW - my keyboard is well out of warranty and no longer under AppleCare.