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Network card issues (broken?)

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lucha84 Posted messages 5 Registration date   Status Member Last intervention   -  
lucha84 Posted messages 5 Registration date   Status Member Last intervention   -


I have a problem with my desktop PC; I have fiber with an Ethernet cable, and all of a sudden, my PC no longer recognizes the cabling...
The cable works fine because I tested it on my laptop, and it works without any issues.
Moreover, in the network settings and in the device manager, my PC indicates that the network card (which is integrated into the motherboard) is nonexistent (and there is no unrecognized hardware in the manager with the famous "?").

I tried reinstalling the LAN driver for the motherboard, it didn't change anything, restoring Windows to a later date, nothing, and I even formatted the Windows disk and reinstalled it (Windows 10), still nothing... I even attempted to clean the Ethernet port of the PC and change the cable (which still works on the laptop)

Where could this be coming from? Is it possible that the network part of the motherboard is no longer functioning, but the rest is?

Thank you :)

6 answers

  1.
    Clarckos Posted messages 10059 Registration date   Status Contributor Last intervention   930
     

    Hello.

    What is the model of your computer?

    Is there a function (in the BIOS) to disable the network card? (just a hypothesis, you know).

    Have you tried using an Ethernet/USB adapter?

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    1. lucha84 Posted messages 5 Registration date   Status Member Last intervention  
       

      Hello, it's a gaming PC that I built, the motherboard is a B550M DS3H

      I looked for this but couldn't find it, and above all I don't understand why it would suddenly deactivate for no reason when I haven't touched anything :(

      Do you think an adapter could work without the network card functioning? And if so, will it give me good speed?

      Thanks :)

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  2. jeannets Posted messages 28397 Registration date   Status Contributor Last intervention   Ambassadeur 6 603
     

    Hello,

    Yes, it's possible, I've had this problem on 2 PCs..!!

    My solution was to buy a network card for €15 and install it in the PC... and it has been working since... You need to reconfigure for the new card.

    Maybe that's what's happening to you...???

    Often, it's a power surge through the cables that causes all of this...

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  3. lucha84 Posted messages 5 Registration date   Status Member Last intervention  
     

    I thought about it too, but since my motherboard (B550M DS3H) has an integrated network card, I'm not sure if I'll have a "slot" to plug it into, if I have the space (because of my graphics card and my big CPU cooler), and if the connectors can exit the PC case :/

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    1. Clarckos Posted messages 10059 Registration date   Status Contributor Last intervention   930
       

      You can always plug this type of network card into a USB port at the back of your computer:

      https://www.amazon.fr/Adaptateur-Ethernet-BENFEI-Compatible-Ordinateur/dp/B08KWC7D78/ref=asc_df_B08KWC7D78/?hvadid=454778049488&hvpos=&hvnetw=g&hvrand=5795867721835566749&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9110716&hvtargid=pla-1038056330321&psc=1

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      1. lucha84 Posted messages 5 Registration date   Status Member Last intervention   > Clarckos Posted messages 10059 Registration date   Status Contributor Last intervention  
         

        Will it be recognized as a fully-fledged network card? I mean, if my PC doesn't find the network card on my motherboard, will putting this in still allow it to work?

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      2. brupala Posted messages 111140 Registration date   Status Member Last intervention   14 441 > lucha84 Posted messages 5 Registration date   Status Member Last intervention  
         

        The two will be completely independent.

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  4. jeannets Posted messages 28397 Registration date   Status Contributor Last intervention   Ambassadeur 6 603
     

    For my part, what I recommend is a card of this kind.

    https://www.amazon.fr/Gigabit-RTL8125B-2-5GBase-T-Adaptateur-Ordinateur/dp/B0CF1Y9WXV/ref=sr_1_16?keywords=Carte+R%C3%A9seau+PCI+RJ45&qid=1697535805&sr=8-16

    It is installed inside the PC and uses the standard RJ45 line, with a throughput of up to 1Gb or 1000 mb/s.

    It is recognized on startup of the PC, plug and play. The drivers are provided in the packaging.

    There you go, to avoid confusion.

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    1. brupala Posted messages 111140 Registration date   Status Member Last intervention   14 441
       

      No, this one goes up to 2.5 Gbit/s

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    2. yg_be Posted messages 23437 Registration date   Status Contributor Last intervention   1 588
       

      Hello,

      What is the "normal RJ45 line"? It's not the RJ45 connector on the motherboard, is it?

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  6. jeannets Posted messages 28397 Registration date   Status Contributor Last intervention   Ambassadeur 6 603
     

    No, this connector is part of the network card above... It is mounted on the mounting plate, soldered to the network card, and accessible from the outside back of the PC.

    And as brupala says, it supports a speed of 2.5gb/s, well beyond what I mentioned... so even if you have fiber, it performs sufficiently.

    Personally, I have the case... the RJ45 on the motherboard is unused and it's the RJ45 on the backup card that works with its own RJ45.

    The original one broke down, just like that, all of a sudden, without warning. And it is definitely dead.

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  7. lucha84 Posted messages 5 Registration date   Status Member Last intervention  
     

    I bought a USB 3 adapter on one side and RJ45 on the other, and I get 780 Mbps on the speed tests, so everything is fine :) topic to close :)

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