My Acer Spin 315-51 suddenly stops responding. My mouse cursor disappears and I cannot click on anything. The touch screen doesn't respond to my touch and I am not able to type anything. I cannot shut the computer down properly so I have to just push the power button to turn it off. After I turn my computer off, and then back on everything works again - at least for a while. Sometimes it works for hours, and other times only a few minutes. There is also some flickering going on, and some faded like circles flicker on the left side of the screen. How can I get my laptop to work normally again?