JumpingJill

I just downloaded CCleaner trial version. I had to restore my computer back a couple of weeks, and now am getting these error messages on startup. I have been on one problem or another for 2 weeks and every day it's something different. I notice CCleaner has a Tray Notification cache cleaner, but also has a warning about Internet Explorer. I don't understand what it means to restart Windows Explorer process. Any help out there for a rookie?