So, I wanted to reset my computer because I wanted to go back to Windows 8 pro, and I took all my pictures and downloads and stuff, and put them on flash drives, all the same brand, all have been used perfectly before. two out of three were fine, and then when I went to put in the last one, it made the sound like its in, and it won't open, the only place I can even see that its a thing is in the device manager, and now it's saying that there's no volume. is there any hope for getting all my stuff back, or at least making this thing work again?