1TB My Passport Essential turns off during file transfer - Mac User

I have a 13" macbook pro and for some reason during file transfers it says theres an error transfering a file then it turns off and cannot be found unless I unplug it and plug it back in… its never worked since I bought the stupid thing and ive formatteed it in windows, and Mac, and partitioned it and it still buggers up. could it be that my macbook pro doesnt have enough juice to power this thing?? HELP PLEASE

here is what it is

Product Name: My Passport Essential
Serial Number: [Edited]
Drive Size: 1.0 TB
Firmware Revision: 1.010
Operating System: Mac OS 10.6.8

Avoid using any USB hubs or USB extension cables, you can also try connecting it to another MAC.