I get this strange message every so often, sometimes more often than other times. It says: USB port drawing too much power. The device that is plugged into it will be deactivated. There are only two things plugged into the USB-The keyboard and mouse. When I get this message, the mouse freezes. If I jiggle the mouse cable where it is plugged into the USB, it comes back and everything is fine until this message comes up again. Ever seen this before? What did you do? Thanks for your help.