One of my internal SATA hard drives ( 1TB Samsung 7200rpm ) keeps disappearing every time when I copy/transfer files to it. It also sometimes randomly disppears by itself too. In fact it actually just happened again as I was typing this.... Opening up disk management doesn't show the drive either. The only way I can get the hard drive to show again is to reboot my PC. I've checked the health status of the drive with CrystalDiskInfo and it reports the drive is fine. Does anyone know what could be the issue? I'm using Windows 10 by the way my specs are in the sig. When it happens I get this message.