Problems under Windows USB Drivers (Apple Wired Keyboard)

Hello guys,

somehow I have some issues after installing Windows 7 regarding the USB Drivers: if I install the "Intel(R) 7 Series/C216 Chipset Family USB 3.0 eXtensible Host Controller Installation Disk - 1E31"-drivers, doesn't matter if I do it from Intel's or Apple's webpage, the USB Ports of my Apple Wired Keyboard (A1243) don't work anymore; it says "Not enough power". I have already tried that workaround found on the web, by increasing the output mAh through regedit, but the point is that after installing these drivers, the section "Power Management" isn't shown anymore in the device manager.

I'm having a Macbook Pro Late 2012 with Retina display