2007 A1226 Macbook Pro: Fans out of control, will not shut down, and temp sensors have gone offline.

Question

So my MBP, just an hour or so ago, failed to shut down.  I click Apple->Shut down, but the computer instead restarts and while loading OS X, gives me an error that says "You restarted your computer because of an error."  The fans are maxed out right now, there is -no- process causing thisl  Also, I use iStatMenus to monitor my temperatures, and all of the CPU sensors have gone offline, iStat is only reporting temps for the hard drive and battery.
iStat also seems to have lost the ability to control my fan speeds.  Uninstalling and reinstalling iStat did nothing.  Resetting PRAM and the SMC have done nothing either.  Any ideas? 

Answer 1

To start up your computer in Apple Hardware Test:
Press the power button to turn on your computer.
Press and hold the D key before the gray startup screen appears. If Apple Hardware Test does not start up, see the Additional Information section at the end of this article.
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Additional Information
Apple Hardware Test is included on the DVDs that are shipped with some Macintosh computers. If the copy on your hard drive becomes unavailable, use the DVDs to run Apple Hardware Test.
For Intel-based Apple computers that shipped with Mac OS X v10.5.4 or earlier, Apple Hardware Test is located on the Mac OS X Install Disc 1 and should be included with your computer.
For Apple computers that shipped with Mac OS X v10.5.5 to 10.6.7, Apple Hardware Test is located on the Applications Install Disc 2 and should be included with your computer.