I have been having an issue where my 2nd Internal HD has been vanishing. I cant seem to figure out why. Not showing up in device manager now. Only recent thing I did on the PC was plug in a few USB devices. So I unplugged one of the hubs I connected the other day and the drive came back after a reboot and seemed to be functioning again. So I think maybe the power supply isnt strong enough to power two hard drives and lots of USB devices. Today the drive dissapeared again. Going to unplug the other USB hub I have connected when I get home and see if the drive comes back after a reboot. If anyone has run into anything like this any help would be greatly appreciated.