PC On/Off status as sensor?

alias: PC ON/OFF
description: ""
trigger:
  - platform: state
    entity_id:
      - sensor.pc_memoryusage
    from: null
    to: null
condition: []
action:
  - if:
      - condition: numeric_state
        entity_id: sensor.pc_currentclockspeed
        above: 10
    then:
      - service: switch.turn_on
        data: {}
        target:
          entity_id: switch.pc
    else:
      - service: switch.turn_off
        target:
          entity_id:
            - switch.pc
        data: {}
mode: single