Your keyboard is sending an eject button press to your computer, this means your actual real eject button is screwed (got some crap in the contacts, you spilt some liquid on it a while back or any other number of physical reasons).
Here are your options.
1) Buy a new keyboard.
2) Look on the internet for a free bit of software that remaps button function (kill the eject key and put it on a F key).
3) Pull off the eject key, clean out all the crap under it, replace key.
Your keyboard is sending an eject button press to your computer, this means your actual real eject button is screwed (got some crap in the contacts, you spilt some liquid on it a while back or any other number of physical reasons).
Here are your options.
1) Buy a new keyboard.
2) Look on the internet for a free bit of software that remaps button function (kill the eject key and put it on a F key).
3) Pull off the eject key, clean out all the crap under it, replace key.