1. My internet keeps dropping out. I have a belkin wireless adapter that keeps being disabled for reasons I am unaware. 2. I have a sandisk 16GB usb zip drive that does the same. I start using the drive and halfway through it stops responding and the only way to get either of them working again is to reboot the PC. 3. My external USB hard drive. I start using the drive and halfway through it stops responding. 4. My Sony Camera when connected via USB also. I start using it and halfway through it stops responding. 5. When any of the above happen the computer fails to restart, it hangs on shutting down and has to be a hard reset.