I had Display Fusion and uninstalled because I had a problem and thought it might be the program. I uninstalled using the program's "uninstall". Worked fine but I went to check my Windows Explorer and saw under Program Files (x86) there was still there a folder called "hooks". I tried to delete but it says a a folder or file is open in another program. Don't know how to delete since restarting my computer didn't work.

Can't reinstall a new version of Display Fusion because it just keeps telling me that a version is already running so it won't install.

Anything I can do to fix this problem?