This machine can boot Windows XP to Windows 11, however Boot Camp drivers don't work on Windows 11 (see below). Note that it will install an old version of NVidia drivers which can cause issues on Windows 10, so it has to be uninstalled before installing the newest version from Windows Update or NVidia website. Therefore, Windows "upgrade-only" discs cannot be used (as they require to insert the previous Windows version disc to allow installation), and Windows editions that came on multiple discs (such as Windows XP Media Center Edition 2005) cannot be installed properly either.