Here are chances of what will be the problem
- 50% battery hassle so that you ought to trade it.
- 30% the charger isn't always working properly so that you need to trade it.
- 15% there is a dust a number of the battery connector and the pc connectors, so you should cast off the battery and smooth the connector's by dry brush cautiously and put it again.
- 5% there may be a hassle of the power deliver, so you must disassemble the computer and trade this element.