Having problems with USB connectivity. I can hook a device to a USB port and it works. I stop the device, restart it and it is not recoginized. Then I restart and the computer finds it again, sometimes. My first thought was to replace the MB. Then I thought of WinXP. Does anyone have any ideas before I go to a lot of expense? Would reinstalling WinXPSP2 correct the problem? I have a lot of important data on the drive which I can back up if needed.