Wired keyboard doesn't work - is recognized - tried everything

[knucles_17]

I need your help, i am out of my dept

I have 2 wired keyboards (apple), one came with mac pro, the other i bought for my pc.

They won't work, on my retina, mac pro, windows pc, nothing.

I have tried:

- Extension cords (1 original from apple, 1 generic)
- Reseting SMC
- Reseting Pram
- Tried 2 apple keyboards (imac g4 and imac late 2006) - they work just fine.

I was ready to put them on the recycle bin but remembered to check if they are recognized by the computers - and they are (see attachment)

I am on your hands....

http://imageshack.com/a/img537/4571/IyLBsD.png

 

[mangotears]

Did you use a regular extension cord or the apple-provided extension cord with the notch in it?
(https://pbs.twimg.com/media/A4PpNZcCEAE9Dza.jpg)

I have 2 wired keyboards that have the exact same issue. Placing a notched extension cord between fixes it for me.

 

[knucles_17]

Did you use a regular extension cord or the apple-provided extension cord with the notch in it?
(https://pbs.twimg.com/media/A4PpNZcCEAE9Dza.jpg)

I have 2 wired keyboards that have the exact same issue. Placing a notched extension cord between fixes it for me.

hi, i used the appl-provided one, no luck...

 

[fhall1]

Can you borrow or buy just a cheap USB keyboard made for a PC just to try it? I could see one KB being bad, but two seems fishy

 

[knucles_17]

Can you borrow or buy just a cheap USB keyboard made for a PC just to try it? I could see one KB being bad, but two seems fishy

Hi!

Yes, very fishy indeed.

I don't have a pc usb keyboard but i have tried with 2 usb keyboards (imac g4 and imac late 2006), both from apple and they work just fine...

 

[DerekMitchell]

I have a similar problem. I upgraded to el capitan and some of my keys on the wired aluminium apple keyboard have stopped working. I too have tried everything. I am reluctant to buy another keyboard, since I believe it is a software problem.