Hence, you don't end up doing a ton of work taking it apart, if it turns out to be something simpler. So below are the list of things that you must check to solve the problem, or before giving it to the service center.
Check the power supply!
One of the most common problems is the misuse of the power supply. Things can go wrong starting from using a wrong laptop power supply to blown fuse inside the plug. Meanwhile, the manufacturer uses same plug size for all its products, but it might vary in terms of voltage or current. Always make sure you are using your own laptop charger, if not invest in a new one.
Check the display!
If you have connected your laptop to external projectors or monitors make sure to disconnect it, because at times it might prevent your laptop from booting. Also, if your laptop LED lights up and you can hear the hard disk running, then the problem lies on your screen. In the case of a faint image on your display, say your Windows screen appears, then your laptop screen inverter has failed.
Remove all the docking stations and peripherals
In case, if you've connected your laptop to some docking stations, disconnect it and check again that to verify the docking station is not the problem. If you are troubleshooting your laptop, make sure to remove all the external devices including -- mouse, pen drive (if any) and external hard disk!
If none of the above methods is working, then there are possibilities that the hardware components might have failed. In this case, you can take your laptop to the nearest service center or third party repair shops!
Drain your battery!
Sometimes if you overcharge the device, the residual electric charge might prevent your laptop from booting. So in order to avoid it, you can follow the below steps.
Step 1: Disconnect the AC adapter and remove the battery.
Step 2: Press and hold the power button for 15 seconds.
Step 3: Now plug the AC adapter to the laptop
Step 4: Once done, press the power button to turn on your laptop.