If its a netgear router the default password is password and incase if you have changed the password vand you forgot it then we can only do a reset of the router(factory settings).u can reset in two different ways ll give you both.you try the hard reset and then if still doesnt work then do funny reset. 1.HARD RESET-you ll find a circular hole(reset button) at back panel of the router(see d chart on the router ).take a paper clip and press and hold for 30 secs and release it after 30 secs. 2.FUNNY RESET-If the previous step doesnt work,then we have do the funny reset.Here press and hold the reset button for 1 minute simultaneously plug and unplug the router 3 times. After reset you ll able to open the netgear smart wizard page with username:admin and password-password.If its netgear router these steps ll solve your issue.
can you give us router's brand, model