Was trying to connect my Dell laptop upto my AIM dash in the MG yesterday and was struggling to get them to communicate, the laptop knew the USB socket was being used at that time but now I have noticed that non of the USB sockets work Ive tried various USB connected items... camera, memory stick etc and the computer doesn't do anything when they're plugged in....

Any ideas whats happened and how to fix it?

I have tried rebooting (lots of times!!), checked the USB roots in the hardware settings and its all good..Help!!!