Windows 7 was released by Microsoft in 2009, and its short startup chime played as the system finished booting and reached the welcome screen. The sound quickly became familiar to millions of home and school computer users during the years Windows 7 was the most widely used version of Windows. As newer versions replaced it, the chime took on a second life online, shared in nostalgia videos, retro tech edits and memes about old computers. It remains popular because it instantly signals the late 2000s and a simpler era of desktop computing.