Delete / Erase / Change Password for the Cisco 2000, 2500, 3000, 4000, AccessPro, 7000 (RP), AGS, IGS, and STS-10x

Step 1: Hit ctrl / break directly after powering up the router.

    If the break sequence does not work, refer to Standard Break Key Sequence Combinations During Password Recovery 
    for other key combinations. 

Step 2: Type o, press ENTER, and record the current value of the configuration register (usually 0x2102 or 0x102).

Step 3: Type o/r 0x2142,and press ENTER

Step 4: Type i , the router will reboot but ignores the saved configuration.

Step 5: Would you like to enter the initial configuration dialog? [yes/no]: answer NO

Step 6: Type enable at Router>

Step 7:Type configure memory or copy startup-config running-config.

Step 8: Type show running-config.

Step 9: Type configure terminal to change or remove the password from the router.

Step 10: Type enable secret <password> in order to change the enable secret password or type NO ENABLE SECRET to remove the secret from router(config)#>

Step 11: type: NO ENABLE PASSWORD to remove the password from router (config)#>

Step 12: Type the no shutdown command on every interface that you use.

Step 13: Type config-register <configuration_register_setting>. For example: hostname(config)#config-register 0x2102 .

Step 14: Hit Ctrl / z or end to leave the configuration mode.

Step 15: Type write memory or copy running-config startup-config to save the changes.

Step 16: Type Reload