I was watching Netflix and I was hungry so I went go get something to eat and when I got back my laptop decided to start a windows update with 0 warning before(Not part of the problem but still annoying). I noticed after the update was over that my pointer seemed to be very stuttery on the desktop and I thought it would go away. 2 days later and its still doing it. It kinda just stutters across the screen. It differs during different things, like it kinds does it on google chrome and the desktop but when I tried to get an example in a sketchpad program, it was as smooth as before. When I drag my finger across which ever way, it moves strait which ever way i want but just very twitchy and laggy. Please help me.