You do not see pictures when you start a slide show in Windows Photo Gallery in Windows Vista
When you start a slide show in Windows Photo Gallery in Windows Vista, the slide show stops, and you receive the following message:
When this issue occurs, you do not see the slide show pictures. You may hear audio for the slide show if the slide show includes audio. This issue occurs even though the Windows Experience Index rates the computer’s Graphics and Gaming graphics with scores of 3.0 or more.
For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB938818.