I wasn't at home for the last 14 days and my laptop wasn't turned on during that time. Today I tried to turn it on but nothing happened. When I plugged in the charger, the laptop turned on immediately. I noticed that the battery percentage was 28%, which means that the laptop had enough power to turn on, even without the charger. I unplugged it, switched off and on again and it worked this time. Any idea what the problem might be? Thank you.