Windows Photo Viewer slide show not working

To resolve this issue, save all your files and work first. Once you have done that, right-click on the Windows desktop and select Screen resolution. The Screen Resolution Control Panel applet will open. Here, click on Make text and other items larger or smaller.

Now, in the Windows 8 Custom sizing options dialog box, click on Custom sizing options. In the settings box which opens, select the Use Windows XP style scaling check box. Click OK.

You will be asked to save your work and sign out. Click on Sign out now. Restart your Windows 8 computer and sign back in. The issue should have been resolved. Hope this helps.