You can download an OEM windows disk or call up your Hardware manufacturer for it if it wasn't provided with the computer (I'm not a 100% sure on this.) As lon

You can download an OEM windows disk or call up your Hardware manufacturer for it if it wasn't provided with the computer (I'm not a 100% sure on this.) As long as your laptop shipped with windows you can install either 32 bit or 64 bit of the same version (oem) on the same computer. Edit: Here's a quick google if anyone's interested in more info: http://forum.notebookreview.com/windows-os-software/604187-legal-download-digitalriver-windows-7-sp1-13-languages.html http://forum.notebookreview.com/windows-os-software/604187-l...