WD 1.5 TB External Hard Drive crashes Windows Explorer

I recently hooked my external hard drive to another computer.  I was doing a file transfer, and the cord became disconnected.  I reconnected it and completed the file transfer.  When I returned the hard drive to the computer that it has always previously been hooked up to, it was unable to be read by Windows Explorer.  In fact as soon as Explorer was launched, it would crash and not respond.  During system reboots the computer would not boot properly, and the Vista recovery disc was unable to load.  Once I disconnected the hard drive, all performance issues were solved.  There have been a few times where I got explorer to recognize the drive, and all files seemed to be intact, however once I clicked on a folder, explorer crashed.  I have run chkdsk and it has taken several days, saying there are errors but insufficient space to do a hot fix, though there is ample space on the drive.  Can you help me please?

The drive is corrupt something like EaseUS Partition Recovery http://www.ptdd.com/  or TestDisk http://www.cgsecurity.org/wiki/TestDisk might fix it.


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Thank you for the help.  Both of these programs hang on startup, I assume looking for the drive.  Even when trying to change to the drive in cmd prompt it just gives me a blinking cursor.  Is there a way to force it to recognize the drive or a boot disk or something I should try?