Originally Posted by
2legit2quit
That list only shows folders and sizes. My guess would be some system file in your root C:\ taking up the space. Hibernation file more than likely.
Control Panel > Folder Options > View
Uncheck hide protected operating system files
Select hidden files, folder, and drives.
Open up Windows Explorer and go to the root C:
Set the display to "details" and sort by "Size" descending
You should see a pagefile.sys and hiberfil.sys
If it is neither of those, Google how to truncate your Windows Search Index.