Okay, sounds like a prank someone has made on your PC...
Now, here's how I
think you can solve it, but bear in mind that I have a Finnish edition of Windows and thus I need to translate the Finnish translations back to English, so there may be some differences to what it actually reads in menus and stuff.
1. Open a directory window. Set up the view to whatever you appreciate (I usually use the one that shows information about the files and then sort by type).
2. Go to Tools -> Settings of the directory (the lowest option in the menu)
3. Select "View" tab (the middle one)
4. Click on "use on all folders" or something like that (the left one of the two big buttons).
This should set the current folder view as default view on every directory, at least on that user. Hope you get it sorted out...
