• List tasks: tasklist /SVC
  • List tasks: schtasks /query /fo LIST /v
  • List services: Get-Service | fl
  • List services: sc query
  • List services (GUI): services.msc
  • Show service details: sc qc <service name>

Remember to restore service after exploiting

It is best to restore a Windows service after exploiting it. Normally you can just restart it after privilege escalation, otherwise a machine reboot might be needed.