PC turns itself on after shutdown

[steffeeh]

Around the time when I first setup automatic shutdown in Windows Scheduler (or what it's called in English), my PC has started turning itself back on again after shutdown in the evening.
I've tried disabling the scheduled shutdown but it made no difference, and I'm not sure how to fix this issue.

 

[evolt]

Hello,

Check your BIOS for any Auto Power on option enabled.

Regards.