There is little that you can do if you have forgotten your BIOS password. The only effective way of resetting it is to take the unit to your nearest Authorised Service Partner who will have the necessary equipment to re-flash your BIOS chip. They will usually need you to prove your owner-ship of the notebook before they will do so.
You may find various utilities listed on some web-sites and also some means of by-passing the BIOS password but these are by no means guaranteed to work on more modern notebooks.