I recently upgraded my Lenovo Ideapad y500 to windows 8.1 "update" and my cursor disappears every time my computer boots to the start screen. I have not had this problem with the regular 8.1. I tried re-installing my touchpad driver and that did not work. I tried troubleshooting and that did not work. I tinkered with the mouse settings in the control panel and that also didn't work. I am running out of time and patience, finals is in a couple weeks and I need my computer to work! please help me guys!