Thanks very much for replying. I have noted since posting that my display is failing in other applications, and rebooting always clears it up. So it is not a Ccleaner problem but some difficulty I am having with display in many applications, so I will address that. Again, many thanks! - Will
I have noted since posting that my display is failing in other applications, and rebooting always clears it up.
A screenshot would help! Here's instructions on how to post a screenshot if you need help doing that.
It could be your display card drivers too, so updating them may help. Note: If you start playing around with display drivers make a system restore point before doing anything with them!