Windows 10 tips
From PeTechWiki
System Wakes Up Unexpectedly
Use the following command to find out why your system woke up:
powercfg -lastwake
The output from this command might help you fix this problem.
Show Seconds in System Clock
Use regedit to browse to key HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced
. Add a DWORD entry ShowSecondsInSystemClock with a value of 1 to the key.
https://winaero.com/blog/taskbar-clock-show-seconds-windows-10/