windows explorer folder view crashing

[builder22]

this is on windows 8.1

If I try and open my folder with all my saved pics and videos saved from my phone the folder opens for a second then closes straight away

If I use Treesize to scan the folder then I can see the files, some of them open and others make media player crash

any ideas?

 

[builder22]

My Microsoft life am program has also stopped working. Reinstalled it but when I try to open it, nothing happens.

Reinstall windows needed?