If you don’t need whatever is stored on the disk you can try using diskpart to clean it, which will remove all partitions on the selected disk. Then you can format and start fresh. In my experience, if cleaning a drive with diskpart doesn’t solve weird problems it’s usually dead.
Yep, that’s the way. After I clean it I usually will format it in disk management instead of diskpart, but you shouldn’t have any problems if you follow that article.