It is worth to doublecheck BIOS settings as well as upgrade BIOS as Win10 may require to have it updated.
On some Systems the fast startup feature is selected by default in Power Options /System Settings. Wake on LAN needs this Setting unchecked to work properly.
If the checkbox is not available under Shutdown settings, fast startup can be disabled in the registry editor:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Power
HiberbootEnabled DWORD
0 = Turn off fast startup
1 = Turn on fast startup