I use a MacBook but I Bootcamped it to windows 7, and I decided to try out windows 8.1pro for gaming. Windows 8.1 was installed successfully and instead of deleting windows 7 folders. .. They named it Windows.old. When I restarted my windows 8.1, and this screen popped up saying restoring previous windows and without thinking I turned off my Mac. Now I'm just stuck with the error saying put windows disc in and restart and select language then reinstall windows. And I have access to the windows memory diagnostics tool, any solutions? The only one I can think of is takeout the drive and put it on my pc then install windows 8.1 on that drive.