Maybe na overcharge, sometimes may mga laptops na nangyayari yan. I drain mo muna power ng laptop mo.
Try this steps if it works.
1. Unplug cord, remove battery.
2. Press hold power button atleast 2 minutes.
3. Reattach cord and plug to outlet, attempt to power on.
4. If laptop will on the reattach battery.
Kung wala pa rin ulitin lang, kng 10 tries na then iba ang sira dyan. consult techncian.
Edit: Try mo rin tp re seat ram sticks, remove-clean-reattach. good luck