Among Internet problems, the “wired Internet not working” symptom may be related to cable/router ports or network adapter drivers. Check the LAN cable/router port and IP allocation status first, and then perform driver and network initialization later.
Solving Order
We've organized the methods starting with the simplest and least expensive ones. Please check the solutions one by one, starting from the top.
Please check them in order from the top. If the issue is resolved, you do not need to proceed to the next step.
For wired connections, cable/port problems must be ruled out first.
confirmation point
After these steps, see if the “No wired internet” symptom decreases or disappears. If there is no change, check the cable/router port availability in the next step.
Separate PC NIC problems from router/ISP problems.
If the DHCP/TCP/IP status is messed up, you can recover the connection.
Outdated or corrupted Ethernet drivers can cause the symptom.
Reconfigure adapter and network settings to default.
We've put together a list of things we frequently check regarding this issue.
If the symptoms do not match exactly, please check the issue below.
If “unidentified network” repeats, it is better to narrow it down to DHCP failure or IP setting conflict rather than changing several settings at once. Check the LAN cable/router port and IP allocation status first, and then perform driver and network initialization later.
If “Giga Internet 100MB” repeats, it is better to narrow down the scope starting from a defective 4-pair cable and port negotiation settings rather than changing several settings at once. Check the LAN cable/router port and IP allocation status first, and then perform driver and network initialization later.
When troubleshooting a computer that suddenly fails to connect to the Internet, it is important to rule out the causes one at a time. Based on the “No Internet” symptom, check the router/modem or ISP problem and the network adapter/IP/DNS settings, then proceed to the next step. Compare with other devices and wired connections to narrow down where the problem occurs: PC, router, or ISP.
If “No internet after update” repeats, it is better to narrow the scope to updated network drivers and changes to TCP/IP settings rather than changing several settings at once. Compare with other devices and wired connections to narrow down where the problem occurs: PC, router, or ISP.
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