I have a mac mini with OS X 10.8.2/2.3ghz cpu i5/6GB ram. I purchase Parallels desktop 8 for mac, and a Dell system windows 7 disc. I can' seen to be able to install win 7 after installing parallels desktop 8. After installing parallels 8 then I put in the win 7 disc when ask to and i get a message "can not find boot manager". I see it trying to read the disc from the cd drive but then stops and can't find boot files on the disc.