or go to the "Thinkpad Mailing list" <Thinkpads@Stderr.org> or the well managed site at www.thinkpads.com
We are not sure of the possibilities since Lenovoa bought out the IBM computer business, but two years ago, there was no way to repair a Thinkpad password problem, except to have the motherboard replaced.
I am not aware of any IBM or Lenovo Thinkpads which have had passwords removed without a hardware change.