lenovo 700

Hello, hoping someone can help me with this. I've had this laptop for about 2,5 years. Got it from here https://www.amazon.com/Lenovo-Ideapad-700-15ISK-i5-6300HQ-2-3GHz/dp/B01FJFN872/ So around 4 or 5 months ago I've started experiencing this issue where I'd press the power button, everything...