If you look at the main topics of forums that discuss problems with the operation of local networks and the Internet, you can often meet 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 working capacity 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. Chips of such network cards have been installed by motherboard manufacturers on their products for many years. Now you do not need, as before, to specifically purchase a network card for the PCI bus.
- Reliability. No need for terminator plugs, precise matching of wave impedance and an advanced software algorithm allow you to connect a cable to 100 Mb / 1 GB to a network card even without special knowledge. In fact, a real Plug & Play.
Why, with all these advantages, the message "network cable is not connected" forces users to search for answers on the forums? Is it really that complicated?
If you delve into the description of the details, it becomes clear that most often the error "network cable is not connected" occurs when using the Internet, and not a local network consisting of several computers. That is, a twisted pair cable is output from the network card of the computer owner and laid to the nearest junction box of the selected Internet provider. Such a scheme increases the number of possible causes.
If the system says “the network cable is not connected”, this means that the data packets sent by the card do not reach the network device of the provider. Thus, there are no acknowledgment response packets. It is this fact that causes the message "network cable is not connected." Verification should start from your own computer.
We will describe the procedure:
- Control Panel - Network Control Center - Changes to adapter settings. Here, on the desired connection, press the right mouse button and select "Disconnect". After 5-10 seconds, we also turn everything back on.
- Remove the plug from the network card connector. We wait a few seconds and reconnect it - sometimes the problem is a bad contact and is thus eliminated.
- Most often, the cause of inoperability is caused by service work on the provider's equipment (for example, connecting new subscribers or changing the switch). At the same time, the power is temporarily turned off, as a result - the network does not work. You just need to wait or call support to find out.
- Previously, the real scourge of providers working through a twisted pair cable was theft. Low voltage allowed fearlessly cutting a piece of cable line and quickly disappearing with it. Now, when reliable doors are installed on the porch doors, this has become a rarity. Although it is impossible to exclude. With a short length of the line, you can examine its condition yourself.
- Sometimes the cable is damaged in the apartment itself. Unsuccessfully shifted furniture easily damages conductors. Check and repair the fault.
- And finally, it’s useful to install the latest network card driver.