Issue with my ethernet not connecting at all

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peanutkyo

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Hi i'm having issues with the Intel(R) Ethernet Controller (3) I225-V Not connecting at all, when i set the speeds to 100 Mbps Full Duplex it does connect but when i change it to higher it doesn't work at all and wont connect, I have tested this on my other desktop PC and it connects fine but on this desktop PC it doesn't work at all it use to connect after ages then drop connection now it doesn't connect at all. i have troubleshooted it installing the new drivers and it hasn't done anything, does anyone know the fix to this?
I am Currently on the latest version of my bios, i have the latest drivers installed
Motherboard: PRO Z790-P WIFI (MS-7E06)

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First thing to try is to power down the PC. Unplug it from the wall and then hold the power button for 30 seconds. Plug it back and turn the PC on. See if that helps any.
 
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When a cable is more or less out of spec you may different results for different NICs. In order to see whether the cable is the problem try using another cable. A good way of testing when possible is to put the PC close to the router and connect with a short known good cable (routers typically come with one). Let us know if that makes a difference.
 
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When you say you tested on another machine, is this an actual NIC card and not the integrated Ethernet connection?
 
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which exact network chip does your second machine use? is it also same intel 225-v chip or it is using another network chip?
 
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ericj159802e9 said:
When a cable is more or less out of spec you may different results for different NICs. In order to see whether the cable is the problem try using another cable. A good way of testing when possible is to put the PC close to the router and connect with a short known good cable (routers typically come with one). Let us know if that makes a difference.
Click to expand...
I cant exactly swap out the Ethernet cable as it goes through some walls and a ceiling so replacing it would be a massive pain but it is plugged into the main router.
 
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pandaz said:
which exact network chip does your second machine use? is it also same intel 225-v chip or it is using another network chip?
Click to expand...
I'm not sure but it was my old desktop computer ill have to check it later but im pretty sure it used a different network chip as its a older machine from 2019.
 
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peanutkyo said:
Its plugged into the motherboard Ethernet slot
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I am not sure what you mean by " I have tested this on my other desktop PC". What exactly did you test? Can't really compare an integrated NIC from two different machines.
 
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peanutkyo said:
I cant exactly swap out the Ethernet cable as it goes through some walls and a ceiling so replacing it would be a massive pain but it is plugged into the main router.
Click to expand...
Could you temporarily move your computer close to the router, just for testing, and hook up het computer with a short Ethernet cable to the router? I am aware it is quite a chore. The reason for asking is to see whether the cable plays a role.

How is the cable terminated? Did you crimp RJ45 plugs to it yourself? Is the cable terminated with keystones?
 
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dvair said:
I am not sure what you mean by " I have tested this on my other desktop PC". What exactly did you test? Can't really compare an integrated NIC from two different machines.
Click to expand...
A while ago i was using my other Desktop computer and the Ethernet was working just fine
 
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ericj159802e9 said:
Could you temporarily move your computer close to the router, just for testing, and hook up het computer with a short Ethernet cable to the router? I am aware it is quite a chore. The reason for asking is to see whether the cable plays a role.

How is the cable terminated? Did you crimp RJ45 plugs to it yourself? Is the cable terminated with keystones?
Click to expand...
It's a 30m cat6 cable i didnt change anything else with the cable i just put it along surfaces that are hidden
 
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ericj159802e9 said:
Could you temporarily move your computer close to the router, just for testing, and hook up het computer with a short Ethernet cable to the router? I am aware it is quite a chore. The reason for asking is to see whether the cable plays a role.

How is the cable terminated? Did you crimp RJ45 plugs to it yourself? Is the cable terminated with keystones?
Click to expand...
I will try testing a smaller cable.
 
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dvair said:
Try using a different connection port on the router/switch that you are connected to.
Click to expand...
I have swapped them around and its the same issue, i tried a ethernet to usb and that worked but the speed was capped to around 300-400 mb/s and i normally had 940mb/s with my ethernet normally before this issue.
 
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I would say the easiest thing to do is get a PCIe NIC card and just disable the onboard one in the BIOS.
 
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