Done (Udemy watched, tools installed and used, conclusions made) is bolded:
Potentially to BTFM or RTFM
net user administrator /active:yes - activate default admin or lnsrmgr.msc -> enable.
psexec -i -s cmd.exe - escalate to System priviledges.
pwdump7 -d <path_to_protected_file> <where_to_copy>
Processes running in the background and sometimes have SYSTEM privileges. May not even be listed in Task Manager, but Autorun tool will probably show them.