Bios Passwords

I have somehow managed to set up 2 passwords in the bios that I have to
enter before the laptop will turn on. One is a drivelock password and I
haven't a clue what the other one is.
I wish I hadn't done it as its driving me mad having to enter these in every
time I turn the laptop on.

I cannot find, in the bios, where to disable these now. They have vanished.
I only have the option to change the password. can anyone tell me how to
remove these please.

thanks Tom