Why is my laptop not booting up?

t
1. Check the power cable – Unplug and plug it back in and make sure the lights on the power cable are on to indicate that the power is connected properly. If the power light doesn’t come on, check the electrical outlets in the wall and make sure it's working.
t
2. Try connecting an external monitor – If the power light comes on, connect an external monitor to check if the laptop is displaying properly. If the laptop is displaying properly on the external monitor, then the laptop display may need to be replaced.
t
3. Check battery power – Try to turn on the laptop with the power cord and without the power cord. If the laptop is able to turn on with the power cable but not without it, the battery may no longer be providing enough power to the laptop and needs to be replaced.
t
4. Perform a hard reset – Disconnect the power cable and the battery and allow the laptop to sit for about 5 minutes. Reinstall the battery and power cord and try to start up the laptop. This will ensure the laptop does not have corrupted settings that could be preventing it from starting up properly.
t
5. Perform a diagnostic test – If the laptop still does not turn on, it's possible that the laptop's hardware is not working properly. Perform a diagnostic test to check if the hardware components are working correctly.