I have a kindle fire and when I plug it in the laptop beeps and it know it has been added, but when I go to my computer it doesnt show anything and when I got to control panel and devices it is therebut needs troubleshooting and then I troubleshoot and it finds nothing, this happens to some usb flash drives aswell any ideas what to do? My pc mouse works in 2 of the 4 ports the kindle works in none. the kindle does light up but isnt charged.