HT201718: How to find the serial number on your iMac

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drkrohnie

Q: imac not recognizing usb keyboard

I have an imac and I use the usb keyboard because I like the number pad on the side.  I tried to plug something into the usb port on the side of the keyboard and now the keyboard isn't working at all.  If I disconnect the keyboard, it works on my macbook, but it doesn't register with the imac.  I unplugged the machine, because I couldn't log off without a keyboard due to multiple users, and restarted, now it's just searching for a bluetooth keyboard,  It doesn't see that the usb keyboard is plugged in.  This has been a repeated problem, I'm usually able to fix with a restart, but this time it's not working.  Thanks

iMac (21.5-inch, Late 2013), OS X Yosemite (10.10.5)

Posted on Sep 2, 2015 6:36 AM