Windows XP, released by Microsoft in 2001, included a set of system sounds for everyday events, including a warning when a portable computer's battery reached a critical level. For many users that brief chime became inseparable from the anxiety of a laptop about to shut down mid-work. As nostalgia for early 2000s computers grew, editors began lifting the sound from the operating system and dropping it into short videos, streams, and memes as a shorthand for running out of power, time, or luck.