Folder backgrounds changed

[kylesgranma]

Yesterday I was looking through one of my scrapbooking folders and moving some items into another folder . When I was finished I clicked on the back arrow and all of a sudden all the backgrounds in that sub folder turned black. How did that happen and how do I reverse it? I use windows 10 and Firefox

 

[Bighorn]

Restart the computer and look again, could be clearing/refreshing the computer and video memory will clear it up.

 

[kylesgranma]

Restart doesn't help. I googled it and found a way to fix it. Seems it is a glitch in windows 10. I follows instructions and it worked. But thanks for answering my question