I have had a wireless internet adapter (usb) in my computer to share the internet conection in my home for over 6 months and all of a sudden now my computer shuts off evrytime I have it conected to the computer. If I start the computer with the device attached it keeps rebooting. If I take the device off of the computer and start it up, it starts up O.K., if I have started the computer and everything works fine as soon as I insert the adapter in the USB port the computer shuts down. I already got a new device and still the same thing. Any advice??