Windows 7 USB not working when using KVM

Hi everybody,

I just installed Windows 7 Professional (64bit) on my Computer. The Computer is connected to a Belkin Switch 2 KVM using USB keyboard and mouse. Everything worked fine. When I use the KVM to switch to my Laptop everything is ok, but if I try to switch back to the Windows 7 PC only the monitor works. The USB keyboard and mouse do not work until I reboot the computer. It worked fine using the same hardware and Vista, so I suppose it is a USB Problem within Windows 7. If anyone has an idea how to solve this, this would be great.

Regards

Steven