A few days ago my computer began to shutoff automatically with a warning saying "You have been sign out, Windows will be shutdown" but didn't give a timer just after 2-4 seconds it turns off.
I posted a topic in malware and they say is not malware that is causing this shutdown.
Edit: I found a image of the warning notification. I don't know if is this one because mine doesn't give much time to read but the first sentence is correct.
Edited by Juyi, 23 July 2018 - 01:42 PM.