Hey I have a 64gb micro sd card that I'm trying to use on my computer and I'm getting the issue of "please insert disk in drive L:". I've tried to use a different micro sd card and it loads. I've tried changing the drive letter and no luck. I just used this sd card in my galaxy s4 1month ago before I sold it, so I'm certain it still works as it did on there. Any ideas? Running Windows 10