iMac not recognising any keyboard I have an Apple wired keyboard and a wireless Microsoft keyboard. I have been working with the Apple keyboard for a couple of months. Today I started my iMac and it didn't recognise the keyboard, I plugged the Microsoft keyboard (I worked with it for a year before I had the Apple keyboard) which works via USB (but wireless) and the iMac did not recognise it either. I tried the SMC reset, as shown here but it didn't work.

Any idea of what's happening? I appreciate your help.
I had a similar problem. Brand new iMac that refused to detect my wired keyboard.

After a lot of experimenting, I resolved the problem by removing my bluetooth keyboard from the bluetooth devices list completely and then plugging in the wired keyboard.


Open System Preferences and select 'Bluetooth'
A list of the devices detected (both paired and unpaired) will appear.
Hover your mouse to the right of any connected bluetooth keyboard and press the 'x' that appears, to remove it from the list completely.
Finally connect your wired keyboard and hopefully 'voila'. For me, everything return to normal.


Good luck, hope that helps.

Sherie