I have been using an HP Pavilion x360 convertible for over half a year now and this problem just recently started. My main cursor would just disappear without any reason and would not return unless I restarted my laptop. The cursors for other uses are unaffected. I have searched the internet for any kind of solution and none of them worked for me. I have also tried troubleshooting and the problem was something along the lines of 'Recent changes were made to the computer', and I am not sure what to do afterwards. I am using Windows 8.1, can upgrading to Windows 10 change anything? I would really appreciate help.