Why is my laptop not charging even when connected to a power supply?

1. Check that the power supply is securely plugged into both your laptop and an electrical outlet
2. Check the power outlet is working by connecting a different device
3. Check that the charging cable is connected correctly into the laptop
4. Check that the cable is not damaged in any way, including fraying or exposed wiring
5. Check the laptop port to make sure there is no dirt, dust, or obstruction preventing a secure connection