WiFi modem

It just so happened that you are the owner of a DSL modem 2640U,who was, like 3-4 years.There are constant crashes,and lowering the speed of your Internet connection.The modem is in one room,laptop in another,on the laptop across the wafer shows a single stick,if I bring the laptop and put the modem all 5,is it possible that the modem has had its day,and it is necessary to change it for a new one?