Okay, I think I found the problem. I was using an external power adapter that came with my IDE/SATA to USB when it wouldn't work. The external adapter got misplaced and I decided to use the actual X-Box to power the xbhd and it works perfectly now. Thanks to ldotsfan and Heimdall for their quick replies to a solution.
But...., as with almost anything in life, a new problem has arose. When I try step 1 (backup content in c drive) by highlighting "Partition 3", clicking "File", and choosing "Backup Image", it gets about 3/4 of the way (7.12 gigs) and stops. It does not freeze or anything like that (task manager shows Xplorer is running normally). I let it set for nearly 7 hours yesterday with no progress made on the last 1/4 of the process, about 2.5 gigs. Any help would be greatly appreciated.
Edit: The xbhd works just fine while in the X-Box.
This post has been edited by Verontier: Apr 24 2012, 04:34 PM