If you still want your next PC to run Windows 7, better act soon. Microsoft has updated its "Windows lifecycle" fact sheet, and the last day you'll be able to buy a PC with Windows 7 preinstalled is October 31, 2016. Microsoft would have shelved Windows 7 awhile ago, since it normally sells previous versions just two years after the next one arrives. However, many people treated Windows 8 like it was radioactive, so Windows 7 Professional (OEM) was extended, and will actually come off the market after Windows 8, and on the same day as Windows 8.1. Apart from pre-installed copies of Windows 7 Professional, all other Windows 7 versions are already off the market.