I don't know how to make sure whether my cable is broken or it's something else causing unability to connect. There is notification saying "Network cable unplugged" but I'm pretty sure it is plugged. Can it be caused by other problems or the cable certainly broken?
My internet provider is Alfa. Router Pentagram Cerberus p6360 P 6132-30. Driver for non-working connection is Realtek RTL8168D/8111D Family PCI-E Gigabit Ethernet NIC (NDIS 6.20).