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The built-in Windows Photo Viewer provides an excellent way to view your photos and images, especially if you use its Slide Show function. If you find that your Windows Photo Viewer slideshow is not working as expected in Windows 8, and only part of the photo appears, you can try this solution. This problem can occur when using DPI virtualization.
Windows Photo Viewer Slideshow does not work
To solve this problem, save all your files and work first. When you are finished, right-click on the Windows desktop and select Screen Resolution. The applet for screen resolution opens. Click here Enlarge or reduce text and other elements.
In the Windows 8 Custom Sizing Options dialog box, click Custom Sizing Options. In the configuration window that opens, select the Use Windows XP style scaling check box. Click OK.
You will be prompted to save your work and log out. Click Log out now. Restart your Windows 8 computer and log in again. The problem should have been solved.
I hope this will help you.