Forgot username and password for IBM thinkpad x41

Back up your most important data to an external storage device in case anything goes wrong while changing the BIOS settings. Remove any disc that is currently inserted in the IBM Thinkpad X41's disc drive.
2-Shut off the Thinkpad X41 laptop. Turn the laptop back on and wait for the "To interrupt normal startup, press the blue Access IBM button" message to appear on the screen.
3-Tap the blue Access IBM button at the top of the keyboard. Click the "Access BIOS" button when the "Rescue and Recovery" menu appears.
4-Click "Yes" and wait for the BIOS to load. Type in the current BIOS password for the IBM X41 and press Enter.5-Navigate over to the IBM's "Security" heading by tapping the right arrow key twice. Scroll down to the "Supervisor Password" listing and press "F5."6-Type the IBM's current BIOS password and hit Enter. Leave the next field blank if you want to completely remove the BIOS password, or instead type in a new password to replace the old one. Press Enter.7-Press "Escape" and then highlight "Restart" and press F5. Navigate to "Save changes and Restart" and press Enter.