I'm about to test my laptop motherboard to make sure a component is receiving power.
All guides point out I need to connect my multimeter to a proper electrical ground.
How do I locate such a ground?
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Motherboards are covered in grounds. Any large metal pad on the motherboard should be a ground. However, there is an easier place to find a ground: The metal around any screw hole that mounts the motherboard to the case is a ground.
If you are unsure if a particular pad is a ground, put your multimeter into continuity mode - when it beeps if a circuit is made. Touch a known ground, such as a screw hole, with one probe and the other to what you are testing for ground. If it beeps, it is connected to ground.