Whenever I boot into windows 10, I am not able to use the cursor. It goes on roaming all over the desktop on its own. If want to click something, it goes and click something else. I was so frustrated I had clean installed windows 8.1 for the time being. I believe windows 10 is full of bugs, takes much too large a space on hard disk and nothing works as it should. I f any of you have any suggestion it is very welcome?