win10 Unattended rebooting

[maunardo]

In the last few days, when I lock the computer (win+L), then after few minutes the computer is rebooting by itself. Very annoying.

 

[marksavio]

maybe your win10 is set to auto restart when idle after updates?
press win+i. update & security. windows update. restart options.

there could be many other causes. you can edit your OP with hardware specs of your PC.