Messed up thumbnails

[Niverive]

I was changing the thumbnails of my folders in my My Music Folder today and somehow I ended up changing every single thumbail of every single folder on my entire computer to random pictures, is there any way to change them all back to blank without having to do them one by one? I've tried selecting all but it doesn't seem to affect all of them. This is really annoying.

 

[KSoD]

Try TweakUI Powertoy for Windows XP. Use that to rebuild your Icon Cache.