My book 3TB Will not stay open

Hi All got Problem got new computer with windows 8 I hooked up the 3tb worked like a dream then I went into file it close it up soon as I open it so I let it go knowing that can get into it through the network no probs there but know when open the drive through my computer no sooner I open it then it close and set me back to the desktop. Any answer in this would be great just that got **bleep** load of work to do ant help on this would be greatful 



Try to use diff ports or cables.