Hello Weh,
I have not need to apply this yet in Windows 7 myself, but it works great in Vista for this exact problem. If you would like to, apply Method Three in the tutorial below to reset all folder view setting to have the Details view.
Windows Explorer Folder View settings - Vista Forums
I would recommend that you
create system restore point first though in case you do like what it does and can then do a
system restore to undo it.
Hope this helps,
Shawn