Click the Red Icon to
Download the CCHF
Test Screensaver (test 1)
for WINDOWS [7.5mb]

 Click the Blue Icon to
Download the CCHF
Test Screensaver (test 1)
for MAC [9.1mb]
Windows
 Mac

Please find the file after downloading and double click to install.

In Windows, go to Start > Appearances & Personalization > Screensavers
to control.

On a Mac, double click the zip file to decompress, then go to the Apple Menu > System Preferences > Desktop & Screensaver (under Screensavers, see "Other")