My Dell e6420 laptop originally Windows 8 with upgrade to Windows 10 worked fine for months after upgrade but recently the touchpad is giving problems. The cursor moves skittishly, or slowly, or freezes. I've tried f12 diagnostics which shows no problems then touchpad works but fails again. I downloaded Alps touchpad driver off Dell website, but forgot to delete old driver. Now when I look in the task manager it shows Alps driver twice with different icons and did not before. ( Each takes .5 mb and seems dumb having both going) Please advise if I should delete both and start over or how to id and delete the oldest one) Still not sure a new driver was going to fix the problem but I'll cross that bridge if it comes. Also, while thinking of duplicate processes I would like to clean out unecessary ones but don't know how to figure out what is junk and what is not?