Try this: First look at the display/properties/screensaver tab and click each
one listed to see what they look like so you can decide which ones to keep
and which you want to get rid of. Write down the one you plan to delete.
Now, go to Search and Files and Folders...and type in *.scr for the filename
and click Find Now.
All screensavers show up on the right hand side. You can right click and
delete the ones that are on your llist.