Drain battery while laptop is sleeping?

Hi guys so i've been strugling with this problem for 5 days, i know you might simply say "just turn it off" or "hold the power button" but believe me i've been trying every solution and it still not working.

I don't know what to do and i can't even take out the battery as its inside the laptop and can't touch because of the warranty for some reason.

Its a lenovo flex 2 15 intel i7 8GB ram and 2gb graphics.

I miss playing games on it so please help me.

Thanks.

UPDATE:
I have also tried to use every button back up button etc but the light is still there (power light when it turns on and off that means its sleeping)

Change the power saver settings. Leave the charger plugged in. Leave the battery alone.

The obvious solution is to call the manufacturer.use your warranty.duh.