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iMac doesn't recognize USB keyboard

1576 Views 8 Replies Latest reply: Mar 12, 2013 1:30 PM by hmhalsey RSS
Brett Dawson Level 1 Level 1 (15 points)
Currently Being Moderated
Feb 25, 2013 8:34 AM

This happens periodically when I turn on my new iMac from a shut down, but not always. With a USB keyboard plugged in, I get a message that tells me there's no keyboard connected. It's looking for a Bluetooth keyboard, which I don't have, but no matter what I do with my USB keyboard, the computer can't find it. I've tried different USB ports. They work with other devices, but not the keyboard. I thought maybe the keyboard was shot, but it does work about half the time I do this, and it seems to work fine with other computers.

 

Any thoughts?

iMac G4, Mac OS X (10.3)
  • OrangeMarlin Level 5 Level 5 (5,130 points)
    Currently Being Moderated
    Feb 25, 2013 8:54 AM (in response to Brett Dawson)

    I'm going to tell you how to fix this for a modern iMac using Lion or Mountain Lion. Your profile says you're using an iMac G4 with OSX 10.3 (Panther). I don't know anything about Panther, so my suggestion may not work.

     

    Go to System Preferences>Bluetooth

     

    You will see a list of devices that are currently connected (it will say so), or a bunch of numbers (usually with no name) that probably were connected in the past. Just highlight them and click the "-" button at the bottom to delete those profiles.

     

    I bought a new iMac but switched out the Bluetooth Keyboard and Mouse for a USB keyboard (need the numbers pad) and a Trackpad. But during manufacturing, they paired the original Mouse and Keyboard to my iMac, so they remained in the profile. One day, on startup my iMac was searching for those two items, which blocked the use of my keyboard. I finally remembered something about this from a problem I had a few years ago, deleted the profiles, and now it works.

     

    Give it a try.

  • OrangeMarlin Level 5 Level 5 (5,130 points)
    Currently Being Moderated
    Feb 25, 2013 9:12 AM (in response to Brett Dawson)

    OK, in the same preference panel, turn off discoverable (it's possible it's trying to find another bluetooth device somewhere). And then click on Advanced, and click off "Open Bluetooth Setup Assistant at startup if no keyboard is detected."

     

    If you ever need to add another Bluetooth device, just remember, you'll have to turn on discoverable.

  • OrangeMarlin Level 5 Level 5 (5,130 points)
    Currently Being Moderated
    Feb 25, 2013 9:28 AM (in response to Brett Dawson)

    Well, I still dont' know if you have an ancient Mac with an ancient Mac OSX. If so, I'm not sure what else to tell you.

     

    If you have a new one, then go to an Apple Store and get it fixed. I'm out of ideas.

  • OrangeMarlin Level 5 Level 5 (5,130 points)
    Currently Being Moderated
    Feb 25, 2013 9:41 AM (in response to Brett Dawson)

    Then call Apple Care, because you have 90 days of free phone assistance. They will tell you what to do next.

  • hmhalsey Level 1 Level 1 (0 points)
    Currently Being Moderated
    Mar 12, 2013 1:30 PM (in response to Brett Dawson)

    This same thing has happened to me, it's really frustrating.  I called Apple Care and they told me that I got a faulty keyboard and should take it to the Apple Store to be replaced.  See my discussion here for what happened to me:

     

    https://discussions.apple.com/message/21493282#21493282

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