Apple keyboard not Working in win. 7

Hello

I have a Mac mini fall 2012 and I installed windows 7 on it, I have installed the support software and it work for a while, but now two days since I installed it, my apple wireless keyboard and touchpad stopped working in windows 7 I have read all the other discussions and other stuff, but non of them seamed to work, it won't even recognize them, only in device manager they show apple ir, but still nothing happens it doesn't show any devices.

Please help

Mikkel