There is no driver for Ehternet Cable. However, there is a driver for ethernet card in your computer. If the problem is with ethernet card then you should try re-install the ethernet card driver. First check your ethernet card to know it's manufacturer. You can find the driver according to it from the internet.
Secondly if this is a fault of the cable then you can either make an ethernet cable at home if you know the procedure or you can buy simply buy this cable from any computer accessory shop.
Secondly if this is a fault of the cable then you can either make an ethernet cable at home if you know the procedure or you can buy simply buy this cable from any computer accessory shop.
