I have recently found that my amd athlon x2 4450e cpu was 64 bit capable so I decided to download windows 7 iso and use the windows loader tool to activate the windows. I have a bookmark to the download for the windows loader, but i couldn't find a working link for the iso file for Windows 7 Home Premium 64-bit so I was wondering if any of you would lead me to one. I would also like to know exactly how to make a bootable usb from the iso file and install windows 7 on my computer safely with all my files intact, if it does not work I also want to know a way to revert back to my windows vista service pack 2 32-bit safely. The windows vista that is on my computer contains its product key if that helps? I am new to all of this so please explain carefully thanks in advance!