I have a brand new 27inch iMac which I want to install Windows 7 - 64bit on. Everything was good, it installed on the 150GB Partition I allocated towards it. However after the installation, It says "Windows is starting" (This is during the installation, when it requires to restart to install.) then suddenly my screen goes off. I can hear the computer still running etc but the monitor just wont do anything, I forced it off and turned it back on which it was fine untill the exact same point when trying to start windows, it just turns off =/ Any help please? Thanks!