The line comes from The IT Crowd, the British sitcom that first aired on Channel 4 in 2006 and followed the basement IT department of a large London company. Roy, the support technician, repeatedly offered turning a device off and on again as his first solution, and the phrase quickly became shorthand for lazy but often effective tech support. Shared as a short audio clip, it spread through memes, reaction videos, and tech humour online, where it still works because almost everyone has heard the same advice from a real help desk.