What should I do if my laptop light doesn't light up?

1. Check that the external adapter is properly connected to the notebook and that the external adapter is working properly.

2. If the battery is used only as a power supply, check whether the battery model is the original battery, whether the battery is fully charged, and whether the battery is properly installed.

3. Check the DC board is normal

4. Check and repair the motherboard

Whether there is a multimeter to test your power box output voltage is normal, the laptop above the socket is not loose, whether the switch has a role, or can be turned on the light does not light, if it is the lamp is probably aging.