From what I've read, Windows 10's This PC evolves from its previous version's My Computer, and keeps its default six folders: Desktop, Documents, Downloads, Documents, Pictures, Videos, the last five of which are, like library folders, linked to their counterparts in C:user.

If that's true, I just don't understand why on my computer the contents of those five folders in This PC and C:user are different. And also, 

why the first folder, Desktop, only shows part of my desktop icons on the screen.

Any help will be deeply appreciated. Thanks.

frwnd1