You say the device actually shows in the Disk Manager just without a drive letter - so you do know that you can just assign a drive letter there right, thus making it accessible?
Are you connecting it (plugging the USB cable in) while the system is up and running? That is supposed to be the best with USB devices.
I have had similar problems some time ago with an external hard drive I used to use but never really figured out what seemed to be the problem, except the problem existed on my Windows Server 2003 OS but not on Windows XP (which is weird becuase as far as I know 2003 is build on XP).
Dude, what I am talking about is not the Device Manager, but the DISK Manager (found in the Computer Management console). In there you can see what disks and partitions are recognized by Windows, and you can, among other things, assign drive letters...
yes thats what im talking about its not showing up... how can i assisngn drive letter, partition it if its not even on the disk manager.. stupid windows just detects ait and goes your hardware is now installed and ready for use! stupid windows grrrr
Intel Core Duo T2400 (1.83Ghz, 2Mb L2, 667Mhz FSB)
2X1Gb DDR2 PC5300 667Mhz
GeForce Go 7900GTX 512Mb GDDR3
80Gb SATA 5400rpm
I have the same problem to.. my external HD used to work fine, but I disconnected it one day and the next time I plugged it back in it would not work anymore. It shows up in device manager with a "!"(USB Mass Storage Device), but will not show up in disk management or My computer. No settings have changed and it used to work fine.