hi I have lenovo y580 bought in 2012 December. I did a battery gauge reset 2 days back. When the procees of discharging battery, at 2% reamaning suddenly lap turn off. after then, if i want to charge the battery. first i need to remove the battery. then i need to plug ac adapter to lap, after that only i can insert battery again. otherwise it won't charge. i check the charger it works fine. i also tried out holding power button for 30 sec. it also din't work for me. if some one comeup with a issue and solved or some one know a way to solve, please let me know. thanks