Click on your start menu, Go to computer on start menu and right click, Then go down and click on manage. When computer management opens up go to left side of the window, Then go down the list to storage, click on the arrow pointing at storage if you don't see disk management under it. Then click on disk management when it opens up you will see your disks. Right click on E drive then go down till you see Format, Click on it then click yes to warning and format to NTFS. That should get it done.