Is it windows not shutting down or PC just not shutting down after windows has? What messages do you get at shutdown?
if its the pc not shutting down, you could try resetting bios to defaults as it could be a bios setting conflicting with windows. Try updating BIOS to latest version.
Have you tried safe mode to see if it shuts down normal from it?
go to settings/update & security/recovery
under advanced startup, click restart now
should restart win 10 in a blue menu
choose troubleshoot
choose advanced
choose startup options
click the restart button
choose a safe mode (it doesn't matter which) by using number associated with it.
Pc will restart and load safe mode