Unusual LAN chip issue Device performance erratic Network connectivity problems Potential hardware fault detected
Unusual LAN chip issue Device performance erratic Network connectivity problems Potential hardware fault detected
It might be checking if your motherboard's LAN chip matches the new modem your ISP set up. Alternatively, the Ethernet port could be faulty. Given the situation with one computer losing internet after the fiber modem was installed, and the LED behavior on your PC suggesting a possible issue, it’s worth investigating both options before jumping to conclusions.
Ensure your cable is correctly connected. Were you linked at 100mbps with the previous gear? Possibly it functions well with older devices since only four of the eight wires are utilized for that speed, and the newer modem might struggle unless all eight wires are positioned properly in the connectors.
It seems like you're questioning the quality of a cable. Would you like to discuss what makes a good cable or share more details?
The previous setup was somewhat outdated, using around 20Mbps now we have a bit more. What matters is that the same Ethernet cable functions with every device I tested except one. It works with an older AIO, a laptop, and a console.
I purchased the Ethernet cable last year and have kept it on the same machine ever since. The issue began on the day my ISP made changes, just before it functioned properly. After contacting Movistar right away, they advised testing the cable with other devices—suggesting the problem might lie with the computer itself rather than the cable. I’m curious if the new LAN chipset could be causing compatibility issues.
But was the connection at 1 gbps or 100 mbps? Each device along the cable needed to match a certain speed. Perhaps the previous modem could only handle 100 mbps, or maybe it functioned properly at that rate if the cable was defective. If your device (like laptop or console) had a port for 1gbps, it would transmit data using all eight wires. If the other end (the modem) was limited to 100 mbps (only four wires connected) or the cable was damaged, the modem wouldn’t recognize the signal and would ignore it. After some time, your device noticed no response from the modem and switched to a 100 mbps connection using just four wires. Once the modem understood the message, communication resumed at that speed. Your new modem might reject messages sent via the older 100 mbps method (only four wires), or the cable could be faulty—bad connectors, incorrect wire order, etc.—causing it to miss the data entirely.
Consider using a dedicated network card for better performance and stability.
You're using a Cat 5e cable and wondering if upgrading to a higher category is necessary. Consider your current needs and the performance requirements of your devices.