RESET CISCO ROUTER PASSWORD

unplug the power cable and plug agin and hold Cntl+break button unless the following screen will appeared
rommon 1 > ?
boot                boot up an external process
confreg             configuration register utility
dir                 list files in file system
help                monitor builtin command help
reset               system reset
set                 display the monitor variables
tftpdnld            tftp image download
unset               unset a monitor variable
rommon 2 > confreg 0x2142
rommon 3 > reset
Now the router will reboot
Continue with configuration dialog? [yes/no]: no
Router>en
R1#conf t
R1(config)#line console 0
R1(config-line)#password mypassword
R1(config-line)#login
R1(config-line)#exit
R1(config)#config-register 0x2102
R1(config)#exit

Press RETURN to get started!
User Access Verification
Password: Now enter your new password and hit enter
Router>en
Router#