First, find out where OSS Video Converter stores files and logs, and check those directories.
These instructions will help you to clean all standard temporary files on your computer. If still having problems, get some file management utility that will show you size of folders - it should help you to track down the biggest folders/files. If this is not an option, open Windows Explorer and browse your drive checking size of folders.
Additionally, you can search for files by Size (
Start ->
Search ->
For Files and Folders -> use
What size is it? option.)
Related: Native Windows features using large amounts of hard drive space:
Page file, Hibernation, System Restore.
Good Luck!
