So my primary laptop (which is the only one out of my 3 laptops that is running windows 10) all of the sudden is unable to download photos off of my camera's SD card. When I insert the SD card into my card reader I encounter an error message that says that it was unable to locate any picture or video files. The files are there. I see them from my camera and I can download them successfully unto my other two laptops (both of which are running windows 7), so the problem is clearly not with the SD card. I have an external card reader and I have already tried running my SD card with that devise but I encounter the same error. By the way I have been using this SD card successfully with this laptop for over a year now and have never run into this problem before. I have already tried rebooting my computer. My laptop is a Lenovo Z580 and my SD card is a SanDisk 64 GB Extreme Plus 80 MB/S SD card just in case any of that information is relevant.