Windows wakes up the PC at seemingly random times

Find out which timers are active:

powercfg /waketimers

1. Download PSExec

2. psexec.exe -i -s %windir%\system32\mmc.exe /s taskschd.msc

3. Task Scheduler Library → Microsoft → Windows → UpdateOrchestrator.
4. Right click the task called Reboot
5. click on Disable.

1. regedit
2. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power
3. CsEnabled → 0