power up in order to put the router into ROMMON.
2. Type confreg 0x2142 at the rommon 1> prompt in order to boot from
Flash.
This step bypasses the startup configuration where the
passwords are stored.
3. Type reset at the rommon 2> prompt.
The router reboots, but ignores the saved configuration.
4. Type no after each setup question, or press Ctrl-C in order to
skip the initial setup procedure.
5. Type enable at the Router> prompt.
You are in enable mode and should see the Router# prompt.
6. Type configure memory or copy startup-config running-config
in order to copy the nonvolatile RAM (NVRAM) into memory.
7. Type configure terminal.
8. Type enable secret
For example: hostname(config)#enable secret cisco
9. Type config-register
either the value you recorded in step 2 or 0x2102 .
For example: hostname(config)#config-register 0x2102
10. Press Ctrl-z or end in order to leave the configuration mode.
11. Type write or copy running-config startup-config in order to
commit the changes.