Thumbnail .jpg Images

How do I change the setting so that my thumbnail .jpg images show the actual picture. I went through the AVG tune up and to speed things up it changed all the thumbnail images to one simple picture. I do not want to open each file to see what the picture is.

Hi Dan,

We're glad to look into this & help you.
From your description, it seems that the view settings has been changed.
Please share us the screenshot of the view about which you're concerned for better clarity.  
Meanwhile, you can try to revert the changes made by AVG TuneUp : Open AVG TuneUp - Rescue center (in right pane) - click on Undo beside the recent changes - Restart computer once & check if it helps.