Files Not Backed Up

I am unable to delete the files that were not backed up. I have tried several different options but I have been unsuccessful. Because I am far from being a tech genius I need help. I do not know if it is wise to ignore this , but I do wish I could find some help. I have read to look for the check mark beside each file but all I see the size of the file.

Can someone please give this tech novice some very simple advice and steps I can follow. I truly appreciate all the help I can get.

Hi SwanGirl,

It seems this issue can be better assisted over a phone call. Please check the link below for more information.