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My Google-fu has failed me.

I've found info around the net for assigning and rearranging drive letters, but this problem is different.

I have a laptop that shows the C: drive just fine. However, the DVD drive and anything else that you hook up to it doesn't get a drive letter. And when you try to assign one manually, it doesn't give you an error, it just doesn't assign the letter to the drive.

I'm running Windows 7 Home Premium 64-bit.

Any ideas or even pointing me in a correct general direction would be greatly appreciated.

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When did the problem start? Any new software installed just before it did start? – Moab Apr 11 '11 at 22:36
Not sure. I noticed it when I got a T-Mobile Internet Stick and when I plugged it in, it didn't give me the option to install the software like it usually does. But the weird thing is that everything shows up fine in Drive Management. Even the DVD drive shows up there, but it doesn't get a drive letter or shows up in Explorer. – Critologist Apr 12 '11 at 14:35
Sounds like the usb controller drivers have gone wonky, use device manager to uninstall everything under Universal Serial Bus Controllers, when done uninstalling Do Not reboot, but right click on any device and select scan for hardware changes, the devices and drivers should be reinstalled, then reboot and try a usb drive. – Moab Apr 12 '11 at 14:52
You can also try this before reinstalling USB controllers, open an elevated command prompt and type the following commands, hitting enter for each one...diskpart <enter>...automount enable <enter> – Moab Apr 12 '11 at 14:56
I tried diskpart => automount enable and it completed successfully. But that didn't fix my problem. New info, when I go to Devices & Printers, my T-Mobile stick shows up, but it says there are errors. And the troubleshooter can't help (ever). – Critologist Apr 12 '11 at 16:03

It sounds like drive letters are hidden for you, can you use DriveLetterView and make sure they are shown?

If this doesn't work; please update your post and describe what you see and do, perhaps with screenshots.

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I couldn't use the utility on the page. When I try to open it, I get the error "Unsupported Compression Method." – Critologist Apr 11 '11 at 22:57
Here are some screens I grabbed. 1) 2) 3) 4) This shows My Computer, Computer Management, Trying to assign a drive letter, and afterwards. – Critologist Apr 11 '11 at 23:20

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