If you can't see the password prompt, Lock My PC is probably in the "blind" mode – press Shift+Spacebar to display the password prompt.
To recover password to Lock My PC free edition, type "999901111" in the password line. Do NOT press Enter or OK button.
You will see a numeric recovery code under the password line.
Type this code in the form below (on this page, not in the program) and certify that you are authorized to unlock by checking the corresponding box, then press Submit.
You will get a new recovery password, which you can use with Lock My PC instead of your password.