My EXTERNAL hard drive doesn't SHOW up on "My Computer", but when I check "Device Manager", it show up inside "disk drive", and the "Device STATUS" inside the "Properties" shows "This device is working properly". What's wrong?If it has not been assigned a drive letter, it won't show up on My Computer. This is usually done automatically, but not always.
Right-click My Computer
Left-click Manage
Select Disk Mnagement
Find the Disk Drive in the Lower Right Panel
Right-Click, select "Change Drive Letter"
Thank you for your help, Computer_Commando. But it doesn't work. The external hard drive doesn't show up in "Disk Management". Can anybody help?
Is this a new drive?

No. It worked before. I would suggest trying a different USB port, or cable, it is possible that one of them failed.I don't think so. The USB port works with other external hard drive. And, when I connect the hard drive the the computer, the "Safely Remove Hardware" on the right bottom show up. So, I think the cable is OK too.Have you tied it on another computer?I did. It still not work.Did you have the drive set for optimization of performance, or for quick removal?

If it was set for optimization of performance and the cord was yanked the drive could have been corrupted.

Can you read the data on a different computer?Right click it in Device Manager and select Properties....let's hope it doesn't say RAW...Quote from: Quantos on July 31, 2009, 12:18:14 AM

Did you have the drive set for optimization of performance, or for quick removal?

If it was set for optimization of performance and the cord was yanked the drive could have been corrupted.

Can you read the data on a different computer?

Right click it in Device Manager and select Properties....let's hope it doesn't say RAW...