I have been playing CSGO on my Lenovo Ideapad 300-15isk for more than two years. Few days back when I was playing CSGO multiple keypresses stopped working. It still detects two keys pressed at once. But, it is not detecting more than two keys. Now I can't move diagonally while shooting or I can't shoot while crouch moving. This is really annoying and the game is almost unplayable. What could be the reason behind it and how to fix it?