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