Windows Vista Desktop Icons and Files Missing

When logging into my user account today, only half of the icons on my desktop loaded. I then clicked Start and there was nothing displayed in it. I then opened my user account folder and there was nothing in it. I don't know if it was a virus of some kind, or just a malfunction of windows. The hard drive still has "Listed" that there are 250GB of information saved on it. I then searched for the missing 200GB that was under my account to see if maybe it had gotten moved.

The Users folder under Partition_1(C is where my user folder should be but when i open the Users folder it does not display me. When scrolling over the Users folder, it only shows that it contains 6GB but when i open its properties, it says there is 212GB on it. Anyone have any ideas of what happened or how i can fix it?

I tried to run system restore but for some reason it hasn't been on for as long as I've owned this computer so no luck on that one. There has to be some way to find the files that are still being displayed on the main hard drive. please help.