[Help] Folder Icons missing!

I replaced my folder icons a long time ago for a theme that I've installed. I recently decided that I don't want them anymore so I deleted them but the "small" icons seemingly just ceased to exist. Help? 

 

Here are the screenies:



(explorer.exe)

 

 

(any other program)

this shows up when you search for a file (for uploading photos, videos, etc)

 

Sorry for my english btw I bullshitted my way through Collegiate English