seagate hardrive not working
Hi there
I brought a seagate harddrive this week. Its been working fine and I've been sorting folders on it. But now i plug it in and it won't register it. i can't find it on my macbook. I've also looked in the disc utility bit but now not listing. I've tried both my usb ports but the same on each.
the blue light comes on the seagate but doesn't flash like it did before then after about 5-10minutes the bluelight goes off.
any ideas? I've been doing hours of work on it sorting photos and now I think its all lost. ??
thank you
laura
MacBook Pro, OS X Yosemite (10.10.5)