This small formless assembler-compiled applet of mere 3KB will help you to load your default screensaver the way Windows normally doesn´t allow you to - on the system startup or with a keyboard shortcut. How? First copy the program´s EXE into a folder of your choice.
Next: 1) create a shortcut of the EXE and place it into your Startup shortcut group. On the next restart of Windows the system will start with your default screensaver loaded..., 2) create a shortcut of the EXE and place it into the Accessories shortcut group.
Right-click on it selecting Properties. Click with your mouse in the Shortcut Key edit box and choose your preferred shortcut (e.g., F12). Confirm OK and you´re done! You will just have created a system-aware F12 keyboard shortcut loading your default screensaver when working with ANY application.