Shutdown (computing)

To shut down or power off a computer is to remove power from a computer's main components in a controlled way. After a computer is shut down, main components such as CPUs, RAM modules and hard disk drives are powered down, although some internal components, such as an internal clock, may retain power.

For other uses, see Shutdown.
"Shutdown.exe" redirects here. For the album, see Shutdown.exe (album).
"Shutdown -r" redirects here. For the episode of Mr. Robot, see Shutdown -r (Mr. Robot).
"Power down" redirects here. For the book, see Power Down: Options and Actions for a Post-Carbon World.

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