I wasn't really having a problem but ran across ccleaner, downloaded it and ran it as a precaution to clean things up. I mean I installed ccleaner, told it to analyze, then allowed it to remove all the extra files. Then I set it to wipe the free space with 3 passes and went to bed.
I woke up and saw the window "The volume does not contain a recognized file system. Please make sure that all required file system drivers are loaded and that the volume is not corrupted."
I closed it and came here to search for what that meant and to see what I need to do or why I got that window. My computer seems to be working fine but I use it a lot and wanted to clean the junk off of it.