Hello, I have a Lenovo G500, it's about 18months old, plugged my charger ( that came with the laptop when bought new) I've never had an issue, but plugged it in to charge and after 10 minutes there was a massive "crack", the laptop won't turn on. Have been out and bought a new charger thinking it was that ( the charger box smells fried but the laptop doesn't at all) but it won't charge? Tried this seceret button reset thing and still nothing :/ took the back of the laptop and no visible damage or smell - any advice please? TIA