@autobarn: Thanks for the suggestion, man. I actually did try that during my troubleshooting list with the Microsoft representative, but it didn't work. I guess mine was truly dead.
@jackel2072: Glad you found a resolution. The experience overall was pretty straightforward, but the time it took was much too long. I agree that the advance exchange is good, though. Hopefully not too many people will have to use it! ;)