Windows orb changer help! Windows won't start

[Pixelesque]

So I tried this on my windows 8.1.. bad, bad idea. I'm running this on a virtual machine with Parallels. Unfortunately, the desktop screen doesn't start. Its just a black screen. Any ways I can fix this? Maybe by going through some files from my mac to fix the problem? I need help quick. I use my virtual machine a lot and an answer ASAP will make me happy!