Why does my computer restart on its own?

Answer

The main cause of computer restating itself is because its overheated. The PC, which monitors the temperature of the CPU, is protecting its delicate circuits from the ravages of heat.
Q&A Related to "Why does my computer restart on its own"
Excess heat is the most probable cause. Excess heat is usually caused by dirt. Usually the CPU cooling fan has become dirty or not running at all. Dirt prevents the proper airflow
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Chances are if your computer restarted on its own, it crashed. This
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check the windows updater setting especially the time for installing updates automatically..
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Random restarts can be caused by many things including viruses which can in turn over work your cpu and get hot when they run in the background, especially if your fans are playing
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