I was going along smoothly using my WD drive and after shutting down Sunday night, it’s as though my computer eliminated my “G” drive and I can’t access my files. I keep getting interrupted with “You need to format drive” and the Autoplay window keeps popping up. I don’t know how to fix this problem. Help, please!!!
It means your drive is CORRUPTED and it needs to be formatted so you can use it again.
ThePizzaMatrix is right. I’ll recommend to use a recovery software to get your files and reformat the drive.