If the network cable is not connected

If you look at the main topics of forums that deal with problems with the operation of local networks and the Internet, you can often find the statement "the network cable is not connected, although it is connected" and the eternally related questions "who is to blame?" And "what to do next?".

This, in fact, is not a question, but a real cry for help. It's hard to believe, but the system message "network cable is not connected" is familiar to many (if not all) users. The reasons for its occurrence are different, therefore, although sometimes the workability is restored by itself, in rare cases it is necessary not only to reinstall the operating system, but also to change the network card.

Connecting a computer to networks via the Ethernet interface is currently one of the most popular. The advantages of this solution are obvious:

- Availability. The chips of such network cards have been installed by motherboard manufacturers for many years. Now it is not necessary, as before, to specifically purchase a network card for the PCI bus.

- Reliability. No need for termination plugs, accurate wave impedance matching and an advanced software algorithm allow you to connect the cable to 100 MB / 1Gb to a network card even without special knowledge. In fact, this plug & play.

Why, with all these advantages, is the "network cable not connected" message causing users to search for answers in the forums? Is it really that difficult?

If you look at the details, it becomes clear that most often the "network cable is not connected" error occurs when using the Internet, rather than a local network consisting of several computers. That is, from the network card of the computer owner, a twisted-pair cable is output and routed to the nearest junction box of the selected Internet provider. This scheme increases the number of possible causes.

If the system writes "network cable is not connected", it means that the data packets sent by the card do not reach the network device of the provider. Thus, there are no response packets with acknowledgment of reception. It is this circumstance that causes the message "the network cable is not connected". You should start the test from your own computer. We will write down the order of actions:

- Control Panel - Network Control Center - Changes to the adapter settings. Here at the right connection, we press the right mouse button and select "Disconnect". After 5-10 seconds, we also turn everything back on.

- Remove the plug of the wire from the socket of the network card. We are waiting for a few seconds and reconnecting it - sometimes the problem is a bad contact and thus eliminated.

- Most often, the reason for the inoperability is caused by service work on the equipment of the provider (for example, connect new subscribers or change the switch). At the same time, temporarily turn off the power, as a result - the network does not work. You just need to wait or call customer service for clarification.

- Previously, a real scourge of providers working through a twisted pair, was theft. Low voltage made it possible to safely cut a piece of cable line and quickly hide with it. Now, when reliable doors are installed on the doors of the porches, this has become a rarity. Although you can not exclude. If the length of the line is small, you can examine its condition yourself.

- Sometimes the cable is damaged in the apartment itself. Unsuccessfully shifted furniture easily damages the conductors. It is necessary to check and repair the malfunction.

- And, finally, it is useful to install the latest version of the network card driver.