Windows wallpaper slideshow feature is one of many cool features in Windows 7.
Desktop Background Slideshow, a series of rotating pictures of your choice.
This is very useful for most Windows users as we can't choose what is the best picture to place on
desktop, this way we can heave slideshow of our Family pictures rotating on desktop automatically.
First you need to create New Folder and store pictures that you want to be shown in slideshow, you can name your folder as you like.Once you have all pictures in place you can than navigate to
"Personalization-Desktop Background" window. Right click on desktop, choose "Personalize" and new window will appear. At the bottom you will see "Desktop Background" click on it. Now you need to choose your background, click "Browse" and navigate to the folder that we just created, folder that contain your desired pictures and click "OK" ,Background pictures that you selected should appear in window.
Now you can change Picture position, changing frequency and even make it Shuffle.
There is an option to pause this feature if you are running on battery.
Once you have adjusted everything click "Save changes" and you are good to go.
Now your Background pictures will be changing automatically every 20 min , 30 min or whatever you selected.
Laptop users: This will use more battery power, please do not select short time period if on battery , use at least 30 min or even better make sure you select to pause this feature if you are on battery to save power.