Use pictures as a screen saver
You can create a personalized screen saver by displaying selected pictures and videos as a slide show when you are not actively using your computer.
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Open Screen Saver Settings by clicking the Start button 
, clicking Control Panel, clicking Appearance and Personalization, clicking Personalization, and then clicking Screen Saver.
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Click the Screen saver list, and then click Photos.
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If you want to specify a location for the pictures you want to use in your screen saver or modify the slide show speed, click Settings. After you make your changes, click Save.
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Click OK.
In order to see your screen saver with high-quality visuals (including themes and transitions), you need to have a subscore of 3.0 for the Graphics category in the Windows Experience Index. Some themes also require your computer’s graphics card to have a feature called Vertex Shader 2.0. To take advantage of all slide show capabilities, you might need to upgrade to a more powerful graphics card. For more information, see Ways to improve your computer's performance.
