I've got a lot of tiles without text or picture

I've got a lot of tiles without text or picture, how can I see what hese are for before opening the app?

​These Tiles

Something has happened to your base fonts. You need to search to find the font called seguisym.ttf in your c:\windows\sxs folder and right click the file and select install, then restart.

the folder c:\windows\sxs doesn't exist instead I installed this one (picture), but no succes.

sorry c:\windows\WinSxS navigate to the folder and use the searchbox at the top right of the explorer window

It needs to be the windows 8 version of the file - windows 7 does not contain all the symbols

did you reboot after?

Otherwise run sfc/ scannow from an admin command prompt