Does the Internet work on the same cable on one computer, but not on the other?

Question

Iron

Actually a subject.
Mains socket in the floor. Legrand patch cord 1 m. I connect a laptop - the DHCP server assigns an address, connects the network and the Internet. I connect the station - writes the network cable is not connected and silence.
The desktop stood earlier in another place and worked like clockwork, in the next office it connects immediately, in the right place as it was cut off. There are no prohibitions, rules, blockings on the server (HP, CentOs).
I changed cables, reset settings, plugged it into other working sockets, assigned static, turned off antivirus, firewall, cleaned the connector, installed drivers - it doesn’t help.
Where to dig?
How to diagnose a malfunction of the Realtek integrated network card? - Similar situation. Unless the server has to be rebooted.

Answer 1

Thank you all very much for your advice!
As a result, in the Advanced settings of the network card, I turned off Auto-negotiation in the Speed ​​​​and duplex section and set it to 100 Mbps / duplex, and also turned off energy saving (Energy Saving Ethernet, Green Ethernet). And everything worked.

Answer 2

Have you tried another network card? :) By the way, the server has logs, and you can also do tcpdump...

Answer 3

at least when a network cable is connected to the connector, the LED is usually illuminated that there is a connection. dumb but very effective. although not all have LEDs.
just agree that the network card is dead.
and buy a stationary expansion card, not a laptop - they cost a penny now.
as an option to search for a network scarf among friends.

Answer 4

Since I participated in the previous question, I'm not starting from scratch.
Do you have a network adapter check in the BIOS? Some show the distance to the break.