There’s nothing worse than your computer restarting in the middle of a video game or your work. In addition to having to wait for the computer to boot back up, you might lose any progress you’ve made in the meantime. Sudden reboots or shutdowns can have a number of different hardware or software causes.
How to fix Computer Suddenly Shuts Off or Restarts
If you’re running a Windows operating system, an automatic Windows Update could be the culprit. These updates are supposed to warn you before they reboot but if you don’t see the notification, they could catch you unaware.
If you’re playing a new video game and the computer shuts off, it could be a problem with your power supply — specifically, it might not have enough power to keep the computer running under that load.