I m having exactly the same issue..but Im connecting the WD 2TB to my Asus U series Laptop , OS : Win 7
Tried all the following :
Different USB cables.
Different Power adapters.
but i'm getting low light blinking and can't see on WD Smartware when i click the power button on the back
the blinking light become strong but thats it ...it won't work
please give me a solution
my P/N : WDBAAH0020HCH-00