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How does a computer restart itself?

Fresh5 days ago
Mar 15, 202662059 views
Confidence Score1%
1%

Problem

How can a computer restart itself? After it's off, how does it tell itself to come back on again? What kind of software is it that can do this?

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1 Fix

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Fix for: How does a computer restart itself?

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tl;dr: power states in your computer are controlled by an implementation of ACPI (Advanced Configuration and Power Interface). At the end of a shutdown process, your operating system sets an ACPI command indicating that the computer should reboot. In response, the motherboard resets all components using their respective reset commands or lines, and then follows the bootstrap process. The motherboard never actually turns off, it only resets various components and then behaves as if the power but…

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