Turn on a screensaver without having to wait by adding a shortcut to your desktop:
Click the Start button, and then click Search.
In the Search Companion window, click All file types.
In the file name box, type *.scr
In the Look in box, choose Local Hard Drives (C or the drive where you have system files stored on your computer.
You will see a list of screensavers in the results. Pick a screensaver you want. You can preview it by double-clicking it.
Right click on the file, choose Send To, and then click Desktop (create shortcut).
To activate the screensaver, double-click the icon on your desktop