Restart in Windows XP1.The process of a working computer system restarting is known as a reboot. Rebooting is sometimes necessary to recover from an error, or to re-initialize drivers or hardware devices. A reboot may also be cold or hard (meaning the power was physically shut off then back on), as well as warm or soft (meaning the system restarted without loss of power). The term restart refers to an operating system closing all programs before a warm reboot. For example, the image shows the Turn off computer prompt in Windows XP; with the aforementioned Restart option.

Note: Users should only perform a hard reboot if the computer is completely frozen as it may damage hardware components.

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2. Linux users see the reboot command for further information.

Also see: Auto restart, Boot, Bounce, Power cycle, Reset, Shutdown, Warm boot