Vista - Folders disappearing in explorer

Alright, I'm really bad at explaining things, but I'll try to be as detailed as possible.

Last night, everything was working fine. Completely fine with no problems.

I usually leave my computer on with no problems. I wake up this morning and this happens.

I double click on Computer and I see nothing. No drives are there, no DVD drive, nothing. I do see the folders column on the left though. So I click to open my F: drive (My file storage drive) and all my folders are gone, but any files that were on the F: drive are still there. So I type in my address bar F:\Anime\some random anime, and I can see video file. When I go to F:\Anime (which is all folders) I see nothing. I have a few unorganized files on my F: drive, I can see those files, but not folders. So by doing this and exploring through my command prompt I find out that all of my files are still there, but I can't see any folders at all. Any programs I still had running (IRC, Steam, and Winamp) were all still running and working fine.

I reboot my computer just to be sure and I get the same thing.

I haven't installed anything new, I haven't run anything suspicious. Nothing has been changed since yesterday. I ran a System Restore and everything has returned back to normal. I would have taken screenshots and looked into it more, but making sure my files were safe was the most important thing on my mind. I'd still like to know if anyone else has ever seen this happen or if they have any idea of what could cause this?