No, it's not an outdated heatsink, and the mobo and cpu are definitely compatible. I know there's a way to set the voltages, but that would require that I turn on the computer, and then it'd probably overheat and shut down before I could do anything. The side panel is indeed off, but I didn't want to keep on starting the computer when it kept shutting itself off. I mean, that's not the smartest thing to do when you're in the situation I was in. I'll give decreasing the voltages a shot, as well as the reset. Thanks for the suggestions, and I'll let you know what happens.
-The one and only Keebler Elf-