Shutdown mode? I'm not familar with that... Just to double check, do all your other USB devices work fine on your computer? If so, have you tried using different ports? I even mean ones beside each other. If still nothing, do you get anything on the taskbar at all(warnings, safely remove hardware, etc) or anything new on Device Manager? And warnings or errors there? Finally, you may want to check computer management(Rightclick my computer, MANAGE, disk management) and see if the drive shows up there. If so, see if you can right-click it and assign a drive letter.
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Desktop * Athlon X2 4200 | 2G RAM | 160G HD | 7600GT
Laptop1 * C2D T5550 | 3G RAM | 120G HD | Intel x3100
Laptop2 * C2D T5250 | 2G RAM | 160G HD | Intel x3100
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