Thank you for the details.
Well do you know whether the battery on the bottom of the laptop can be removed or not,if it can be removed you can try a battery reset.To do that please follow the instruction.
Make sure the the laptop completely off and disconnect the power adapter/charger. Remove the battery and press and hold the power button for about 60 seconds. Releases the button do not insert the battery back now plug the adapter back and turn on the computer. See if the problem persists.
Some of the models doesn't have user removable battery in that case look for a battery reset pin hole which usually on the bottom of the laptop or in the left or right side of the laptop.If you see one do the following
Make sure the the laptop completely off and disconnect the power adapter/charger.Then use a paper clip to press into the reset hole gently for 30 seconds then release and try to power up it.
In some models neither of these options are there,in such case simply remove the power adapter/charger then press and hold the power button for 60 seconds and release the power button and check it.
If none of the above works then it needed to be checked by a chip level technicians who can check the motherboard section by section so that he can identify the problem,in some cases simple servicing or replacing of minor components can fix it which wont cost much.The problem is finding a chip level technicians which most of the retailers don't have such technicians but you can ask any of your friends who are in IT or computer field they may be able to find one for you.If that tech also says to replace the motherboard then scrap it.
I hope you are clear now,if you have any doubts please let me know.
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