My Lenovo Laptop, it is only 3 months old. Last night I shut down my laptop and charged it then after 3 hours I unplugged it and didn't use it for a while because I have chores to do. Then when I was about to use it, I cannot turn it on. Whenever I click the power button, the charging icon (the one's that is blinking) is color red. Then I tried to plug in the charger and it opened. The battery is in 100%. whenever I unplug the charger it automatically shuts down (the screen goes black) Please, help! I need my laptop for my presentation. I cannot remove my battery because its not removable, it needs certain tools. Thank you in advance, to whoever answers this.