So I was looking in my (C: ) Drive and found 2 folders that I hadn't seen before, they are w7P_Backups and ProgramData (I have seen ProgramData before but not in my main drive like that). They aren't like full opacity, just visible. I pretty sure that w7p backups is a backup folder for windows 7 (It's empty), I have windows 8.1, sooo idk, can i delete it?. And program data why is that there, I know I shouldn't delete that one.