For some time now because the Avast the computer reboots.
If I disable the Avast the reboot don´t occur and that is why I know that it is the Avast.
Some months ago, I detected that when Steam or Origin began to download the client update this happened so I learned to disable Avast when I wanted those programs updated.
Now, it is always doing that even if I don´t have those programs running. I believe that other software is doing his update and because of this Avast reboot the computer.
That isn’t the latest version. Please use the link I provided to get the latest version or,
right click the Avast icon in the system tray, (by the clock icon) select update and choose Program.
This new version corrected the boot everytime but when I download games from steam, origin, ubisoft or other proprietary download mechanism it still reboot my computer