You have to get our your Volt meter to see if the charger has output. Then you open it up to read the internal battery voltages. If you can't do this then you arrange for a tech to get into the laptop to check it out but this model appears to have shipped in January 2019.

This means it is likely to be in warranty which means you do NOTHING but call it in and let them fix it in warranty. Opening it could void the free warranty and repair.