i am also having the same problem, i took the hard drive out of the housing and hooked it up to the computer and it recognizes the drive but does not show up under my computer. and idea's ??
thanks in advance for your time.
Has is shown in Disk Management?
If so, you could assign a new letter to it for activating it:http://technet.microsoft.com/en-gb/library/cc757491%28v=ws.10%29.aspx
Try to format it. (Before you format it, you'd better copy off all your important data at the aid of data recovery software. Just search "drive data recovery tool
" over the internet and select an efficient one according to your needs.)
Or, you also should to read this article to figure out your problem:http://support.microsoft.com/kb/330140