Important Note:
WARNING: Try this method only if you are willing to risk your data. I am not forcing anyone. This method worked for me.
Keep your laptop charged before trying this method. Do not overcharge. I had kept it plugged in but see to it that the laptop or charger doesnot heat too much.
First let me tell you my issue see if it correlates to yours:
I minimized chrome and closed my lenovo 320 ideapad laptop without powering it off, when i came back it displayed a black screen with only a cursor which was under my control.
It would not go off even after pressing the power button.
After long pressing the power button for a time period of say 8 secs. It went off finally.
On powering it on, the usual lenovo name along...