New PC demands password which was never set up

Hello, hope someone can help. My PC packed up irrevocably. I have a new pc . When I try to connect my Passport USB discs to the new pc the wd security demands a password. But I never set up a password on my discs so I cannot open them on my new pc. Is there a solution to this problem? The data is irreplaceable. Any help gratefully received.
Thanks
Robert