Apple Remote Confusion?!

[Bofosie]

For some strange reason my apple remote is no longer working. I have checked the batteries, it is not paired with any other remote and the disable remote control infrared receiver is UNchecked.
I am so confused and any help would be much appreciated.

 

[kyleaa]

I would find a friend's machine/remote so that you can test each to identify whether it is the remote or the IR receiver that is causing your troubles.