A while ago I turned my laptop (Windows 8) over to "Geek Squad" to fix a few minor issues. When I got it back, I found many folders in my drive with some sort of placeholder file in each of its sub-folders.
Rather than asking Geek Squad about it or dealing with it right away, I recently attempted to fix it with a Command Prompt entry [del /s *.gwqa], suggested for Windows 7. Instead of rapidly deleting all of the files, it just made the files invisible to the Command Prompt function. I understand fairly little about computers, but that seems irreversibly inconvenient, without the right program.