Conversation so far:
who took the picture of the windows xp background
Charles O'Rear is the photographer who took the Windows XP wallpaper photo in Napa Valley
when was windows xp released
Windows XP was released to manufacturing on August 24, 2001, and broadly released for retail sale on October 25, 2001
when did extended support for windows xp end
Extended support for Windows XP ended on April 8, 2014, after which the operating system ceased receiving further support or security updates

Question: how many pcs are still running the operating system
Self-contained rewrite: how many pcs are still running windows xp