i cant access my routers web interface (192.168.1.1) its TNDSL 2120router only the login window appears but when i put in the id n password the next window is blank. Earlier i used to have full access but not now. i even reset the router but it didnt work. i use firerfox browser. Plz help what should i do. i wanted to port forward. Plz help. thanks

i even used different browser and my connection is wired.....

i enter the correct id n password..........