I installed Windows 7 RC and everything worked fine. I could boot into both. While on 7, I installed and ran Roller coaster tycoon and it froze while in the game. It was also scanning I think with Windows Defender. I couldn't do anything, I did ctrl alt delete, alt f4, nothing worked. Took out the disc. Held power button, and turned it off. Booted it up and it went into Mac cause I didn't hold option, and then it froze on the grey apple screen after the thing span around a couple times. Won't go any further. Tried booting into Windows, same thing. Loads to the "starting windows" page and freezes. WHATS WRONG CAN I FIX IT HELP!!! Uhm, it works now? Maybe a heat issue? Is there something wrong?