Hi flame3,
I am Aster, an Independent Advisor and I'm here to help you with your problem,
You can head to:https://www.screensaversplanet.com/screensavers...
to install the screensaver.
Once its downloaded and you have unzipped the folder, there is a file. Right-click on the field and click Install. This should open up the Screen Saver Settings window and "3D Pipes" will be selected as your current screensaver.