Money Back Guarantee all genuine. all keys are checked from Microsoft before sale. READ MY BONANZA FEED BACK YOU ARE BUYING BRAND NEW SEALED WINDOWS 7 PROFESSIONAL 64-BIT DVD WITH A KEY OR COA. WORKS ON ANY MACHINE. MAKE SURE YOUR PC IS 32 BIT OR THE DISC WILL NOT WORK. YOU WILL RECEIVE WHAT YOU SEE IN THE PICTURE IF YOU ARE NOT SURE ABOUT YOUR PC CONFIGURATION. THEN PLEASE CONTAC ME BEFORE YOU BUY AND I WILL SEND YOUA DISC WHICH WORKS ON 32 BIT OR 64 BIT. THIS IS FOR 32-BIT MACHINE AND WILL WORK ON 64 BIT MACHINE. AS PER RULES ON OEM SOFTWARE "Original equipment manufacturer (OEM), bundled, or recovery software, is included with the purchase of new computer hardware. It is policy that sellers can't list these types of software unless they are selling it with the original hardware." THE ORIGINAL MACHINE IS INCLUDED IN THE SALE. Please arrange to collect computer