Can't see data on HD


I can’t see data on my MY PASSPORT  500Gb hard disk. It has 350 Gb of data .

 Is this because of virun attack?

Please suggest

Unless your PC was hit with a virus it’s more likely a power issus. Did you try moving the cable to different ports? Did you try another cable? Is this USB powered? if separate move plug to a different outlet. Does the drive show in computer management? Sometimes it just needs to be renamed. Is there a light on? Does it sound like the drive is spinning up?