Hi Anton,
You can access boot menu and choose password recovery but this option is only accessible via serial console and after you see Cisco logo hit ESC button once.
Once you choose password recovery current password will be ignored during this current session only so the first thing you need to do is to change and save new password. You can use CLI for this:
switch(config)#username cisco password cisco
switch(config)#exit
switch#wr
and you should be ready to go :-)
Aleksandra
