Can't unlock My Passport Essential drive - bought today and not even started backing up

I just received My Passport drive today.  Installed the software and set  and confirmed the password.  Plugged drive in and I am told the password is invalid.  I havent backed up anything yet but it is frightening to think that you can’t access backed up files.  What would be the point of having a WD My Passport Esssential (500GB) drive?

I am running  Windows XP with Service Pack 3  Is there a limit to the length of the password as I am unable to enter the last 2 characters?

I need help please or I am returning the drive.

TomParkD

The password must be up to 16 characters. Unfortunately, if you are unable to unlock it you must erase the drive and reset the password. Please click herefor further details and instructions on how to resolve that issue.