1811 router lock out—-HELP

I have a 1811 cisco router, i got it free ,dont know password, when try to get into con0 port connection made but no data, they must of shut down the port, so i cannot get into to do password recovery, also busy led light is always on (is that right) sys led light shows it is booting fine, is ther anyone that can tell me if there is a reset on hardware or otherwise some other way to get into Router for i can do something, please help, Thank you very much Mike