Oprava: Port Ethernet nefunguje v systéme Windows 7/8/10

Aj keď väčšina z nás v dnešnej dobe používa Wi-Fi, sú chvíle, kedy by ste na pripojenie k internetu použili Ethernet. Pamätajte, že definícia ethernetu je veľmi odlišná od toho, pre čo obvykle používame slovo „ethernet“. Zvyčajne sa označuje ako káblové pripojenie k internetovému smerovaču. Možno ste videli, že drôty idú zo zadnej strany počítačov k internetovým smerovačom. Spravidla vždy, keď niekto povie, že jeho sieť Ethernet nefunguje, má na mysli to, že jeho počítač má problémy s pripojením k internetu. Pretože je ich počítač pripojený k internetu pomocou kábla, má tento kábel alebo jeho ovládač alebo sieťová karta určitý problém.

Problém nefungovania siete Ethernet môže súvisieť s mnohými vecami. Pretože nehovoríme o konkrétnom chybovom hlásení, môže tento problém spôsobiť veľa vecí. Môže to byť problémový vodič, prerušené pripojenie, sieťová karta, zastaraný ovládač a čo už. Problém môže byť spôsobený problémom s hardvérom aj softvérom. Budeme teda musieť prejsť viacerými metódami, ktoré sa budú týkať tak problémov so softvérom, ako aj s hardvérom, ktoré môžu spôsobovať problémy s pripojením Ethernet.

Tipy

• Niekedy môže byť problémom jednoducho nefunkčný port. Uistite sa teda, že používate správny port smerovača. Na smerovači je niekoľko portov a ethernetový kábel by ste mali pripojiť k inému. Po dokončení skontrolujte, či je problém vyriešený.
• Problém môže byť spôsobený dočasným vypnutím antivírusu. Takmer každý antivírus má možnosť deaktivovať. Vypnite antivírus na niekoľko minút a skontrolujte, či Ethernet funguje alebo nie.

Metóda 1: Skontrolujte, či je povolený Ethernet

Problém môže niekedy spôsobiť zablokovaný ethernet. Ethernet a rôzne ďalšie zariadenia je možné ľahko deaktivovať pomocou Správcu zariadení. Aj keď si nepamätáte, že ste zakázali sieť Ethernet, je dobré skontrolovať stav. Niekedy sú zariadenia deaktivované náhodne alebo z dôvodu chyby.

Podľa týchto pokynov skontrolujete a povolíte sieť Ethernet

1. Podržte kláves Windows a stlačte R.
2. Zadajte príkaz devmgmt.msc a stlačte kláves Enter

3. Dvakrát kliknite na Sieťové adaptéry
4. Vyhľadajte a kliknite pravým tlačidlom myši na sieťové zariadenie
5. Vyberte možnosť Povoliť . Ak vidíte možnosť Zakázať , znamená to, že vaše zariadenie je už povolené. V takom prípade kliknite na Zakázať a potom vyberte Povoliť Týmto sa zariadenie reštartuje.

Po dokončení skontrolujte, či Ethernet funguje alebo nie.

Metóda 2: Odpojte napájanie

Toto je starý trik, ktorý však fungoval pre veľa používateľov. Problém vyrieši vyloženie energie z počítača. Pri vykonávaní tejto metódy postupujte podľa pokynov uvedených nižšie

1. Vypnite systém
2. Vytiahnite / odpojte napájací kábel. Ak máte notebook, vyberte batériu
3. Podržte tlačidlo napájania po dobu 30 sekúnd a potom ho uvoľnite
4. Teraz zapojte systém (alebo vložte batériu, ak máte notebook)
5. Zapnite svoj systém

To by malo problém vyriešiť. Teraz by malo byť všetko v poriadku.

Metóda 3: Aktualizácia ovládačov

Ak vyššie uvedené dve metódy nefungovali, je pravdepodobné, že máte chybný ovládač. S vodičmi môžete robiť niekoľko vecí. Najskôr by ste sa mali pokúsiť vrátiť ovládače späť, ak sa problém vyskytol po aktualizácii ovládača. Najnovšie ovládače majú niekedy chybu alebo problém s kompatibilitou. Ďalej by ste mali aktualizovať ovládače na najnovšiu verziu. Môžete to urobiť automaticky aj manuálne. Nakoniec by ste mali odinštalovať a nechať Windows nainštalovať generickú verziu ovládača pre sieťovú kartu.

Poznámka: Pretože máte problémy s pripojením na internet, niektoré z týchto krokov vám nemusia fungovať. Napríklad nemôžete vyhľadať najnovší ovládač na internete a stiahnuť si ho. Mali by ste to urobiť z iného počítača, ideálne z toho, ktorý čítate tento článok, a skopírovať ho do vášho systému, v ktorom je problém.

Ak ste nedávno nainštalovali aktualizovaný ovládač

Aj keď je nepravdepodobné, že aktualizovaný ovládač spôsobí tento problém, nie je to úplne nemožné. Ak ste nedávno nainštalovali novú verziu, je veľká šanca, že vrátenie sa k predchádzajúcej verzii môže problém vyriešiť.

1. Podržte kláves Windows a stlačte R.
2. Typ devmgmt . msc a stlačte kláves Enter

3. Dvakrát kliknite na Sieťové adaptéry
4. Vyhľadajte a dvakrát kliknite na svoje sieťové zariadenie
5. Kliknite na kartu Ovládač
6. Kliknite na Vrátiť späť ovládač ... a postupujte podľa pokynov na obrazovke. Poznámka: Ak je tlačidlo „Vrátiť zmeny ovládača ...“ sivé, znamená to, že sa nemôžete vrátiť k predchádzajúcej verzii.

Ak ste sa vrátili späť na predchádzajúcu verziu, po dokončení procesu reštartujte počítač a skontrolujte, či je problém vyriešený alebo nie. Ak problém stále pretrváva, skúste aktualizovať ovládač.

Aktualizácia

Poznámka: Možno nebudete môcť vykonať všetky kroky, pretože tieto kroky vyžadujú prístup na internet. Postupujte teda podľa týchto pokynov na inom počítači a preneste stiahnutý súbor cez USB.

Ovládač môžete aktualizovať automaticky aj manuálne. Automatická aktualizácia vám však nebude fungovať, pretože váš systém Windows vyhľadá ovládač a vyžaduje prístup na internet. Ručná aktualizácia tiež vyžaduje internet, ale môžete si stiahnuť ovládač z iného počítača a preniesť ho do počítača obete.

Ručná aktualizácia:

1. Podržte kláves Windows a stlačte R.
2. Zadajte príkaz devmgmt.msc a stlačte kláves Enter

3. Dvakrát kliknite na Sieťové adaptéry
4. Pred aktualizáciou ovládača by ste si mali skontrolovať, či máte najnovšiu verziu ovládača alebo nie. Postupujte podľa pokynov uvedených nižšie
   1. Vyhľadajte a dvakrát kliknite na svoje sieťové zariadenie
   2. Kliknite na kartu Ovládač
   3. Pozrite sa do sekcie vodičov . Uvidíte verziu ovládača. Poznačte si verziu ovládača alebo nechajte toto okno otvorené

   

   4. Teraz prejdite na webovú stránku výrobcu ovládača a vyhľadajte najnovší ovládač zariadenia
   5. Skontrolujte, či máte najnovšiu verziu alebo nie. Ak máte najnovšiu verziu, prejdite do sekcie Odinštalovať nižšie. V opačnom prípade si stiahnite ovládač a pokračujte

5. Vyhľadajte a kliknite pravým tlačidlom myši na sieťové zariadenie
6. Vyberte možnosť Aktualizovať softvér ovládača ...

7. Kliknite na položku Vyhľadať softvér ovládača v mojom počítači

8. Kliknite na tlačidlo Prehľadávať a vyberte ovládač, ktorý ste si predtým stiahli (v našom prípade na miesto, kam ste skopírovali stiahnutý ovládač).
9. Kliknite na Ďalej a postupujte podľa ďalších pokynov na obrazovke

Po dokončení reštartujte počítač a skontrolujte, či je problém vyriešený.

Odinštalovať

Inštalácia ovládača je správna cesta, ak aktualizácia nefunguje. Keď odinštalujete ovládač, systém Windows automaticky nainštaluje všeobecný ovládač pre vaše zariadenie pri ďalšom spustení zariadenia. Tieto všeobecné ovládače nie sú najnovšie, ale sú to najkompatibilnejšie verzie. Takže toto by pre vás mohlo fungovať.

1. Podržte kláves Windows a stlačte R.
2. Zadajte príkaz devmgmt.msc a stlačte kláves Enter

3. Dvakrát kliknite na Sieťové adaptéry
4. Vyhľadajte a dvakrát kliknite na svoje sieťové zariadenie
5. Pravým tlačidlom myši kliknite na svoje zobrazovacie zariadenie a vyberte možnosť Postupovať podľa ďalších pokynov na obrazovke

6. Počkajte, kým sa odinštaluje

Po dokončení procesu odinštalovania reštartujte počítač. Pri reštarte by mali byť nainštalované všeobecné ovládače. To by malo vyriešiť problém, ak bol spôsobený problémom s vodičom.

Metóda 4: Skontrolujte sieťový kábel

V okne Sieťové pripojenia môžete po povolení ethernetového pripojenia skontrolovať aj jeho stav. Tento proces je veľmi dôležitý na identifikáciu hlavnej príčiny problému. Napríklad, ak váš počítač nerozpozná kábel od začiatku, samozrejme, nebude nadviazané žiadne spojenie. Toto nerozpoznanie môže byť z viacerých dôvodov. Pri kontrole sieťového kábla postupujte podľa krokov uvedených nižšie.

1. Stlačením klávesov „Windows“ + „I“ otvorte nastavenia.
2. V nastaveniach systému Windows kliknite na možnosť „Sieť a internet“ a odtiaľ kliknite na možnosť „Ethernet“ na ľavej strane.
3. V nasledujúcom okne sa zobrazí počet ethernetových pripojení, prípadne sa bude zobrazovať iba jedno.
4. Ak je pod ethernetovým pripojením uvedené „Nepripojené“ , znamená to, že kábel nie je rozpoznávaný na cestách, a to buď s adaptérom, káblom alebo softvérom, ktorý ho má rozpoznať.

Ak sa zdá, že je váš kábel pripojený, skúste ho odpojiť a znova pripojiť. Káble sa môžu zhoršiť časom alebo nesprávnou manipuláciou. Ak váš ethernetový adaptér stále zobrazuje sieťový kábel odpojený, skúste prepnúť na iný kábel. Môžete tiež vyskúšať iný port na smerovači, prepínači alebo modeme (ak sú k dispozícii), pretože niekedy môže dôjsť k poruche týchto portov.

Metóda 5: Monitorovanie podrobností o pripojení

V niektorých prípadoch je úplne možné, že počítač ethernet správne nerozpozná, pretože vy alebo váš počítač mohli nesprávne nakonfigurovať niektoré podrobnosti siete, ktoré sú potrebné na správne nadviazanie spojenia. Preto v tomto kroku budeme monitorovať niektoré podrobnosti pripojenia a skontrolovať, či sme správne identifikovali všetky parametre. Pre to:

1. Stlačením klávesov „Windows“ + „R“ otvorte výzvu Spustiť.
2. Zadajte text „ncpa.cpl“ a stlačením klávesu „Enter“ otvorte panel konfigurácie siete.
3. V konfigurácii siete kliknite pravým tlačidlom myši na adaptér „Ethernet“, ktorý používa váš počítač.
4. Z ponuky vyberte možnosť „Vlastnosti“, aby sa otvorili vlastnosti siete Ethernet.
5. V okne „Vlastnosti siete Ethernet“ dvakrát kliknite na položku „Internetový protokol verzie 4 (TCP / IPV4)“, čím by sa malo otvoriť okno konfigurácie protokolu IPV4 .
6. V tomto okne skontrolujte, či ste vybrali možnosti „Získať adresu IP automaticky“ a „Získať server DNS automaticky“ .
7. Aj keď existujú scenáre, keď je potrebné tieto údaje zadať manuálne, musíme sa najskôr ubezpečiť, že počítač dokáže tieto informácie získať automaticky.
8. Po vykonaní automatickej extrakcie týchto informácií skontrolujte, či problém stále pretrváva.

POZNÁMKA: Aj keď väčšina pripojení používa protokol IPv4, v okne Vlastnosti siete Ethernet nájdete aj možnosť s názvom Internetový protokol verzie 6 (TCP / IPv6) . Ak vaša sieť používa protokol IPv6, budete musieť vykonať zmeny tu, a nie vo vyššie uvedenej možnosti protokolu IPv4.

Metóda 6: Vypnite antivírusovú ochranu

V niektorých prípadoch je celkom možné, že súčasť systému Windows môže byť v skutočnosti koreňom tohto problému vo vašom počítači. Brána firewall systému Windows alebo Windows Defender môžu spôsobiť tento problém vo vašom počítači. Preto v tomto kroku zakážeme program Windows Defender aj bránu Windows Firewall, aby sme sa uistili, že nie sú vinníkom. Je tiež možné, že tento problém spôsobuje antivírusová ochrana tretích strán, takže tiež vypnite ochranu všetkých tretích strán. Aby ste mohli pokračovať:

1. Stlačením klávesov „Windows“ + „R“ otvorte výzvu Spustiť.
2. Zadajte text „Ovládací panel“ a stlačte kláves „Enter“. Spustí sa klasické rozhranie ovládacieho panela.
3. In the Control Panel, click on the “ViewBy:” option and select the “Large Icons” button.
4. After making this selection, click on the “Windows Defender Firewall” option to launch the Firewall and then select the “Turn Windows Defender Firewall On or Off”.Opening Windows Defender Firewall from Control Panel
5. Make sure to uncheck the “Turn On Windows Defender Firewall” for both the available options to turn the Firewall Off.
6. After making this selection, save your changes and close out of the Window.
7. Press “Windows” + “I” to open the windows Settings.
8. Inside the settings, click on the “Update and Security” option and select the “Windows Security” button from the left side.
9. On the next screen, click on the “Virus and Threat Protection” option and click on the “Manage Settings” option below the “Virus and Threat protection settings” heading.
10. After clicking on this option, turn the toggle off for “Realtime Protection”, “Cloud-Delivered Protection”, “Automatic Sample Submission” and “Tamper Protection”.
11. After disabling all of these, navigate back to the desktop and check to see if the issue still persists.

Method 7: Reset Network Settings

Sometimes, the issue might be caused by some network reconfigurations that we have been unable to fix until now. This might be because these are some root system configurations or cache that have been corrupted and the only way to fix it is by performing a complete overhaul of the network settings. In order to do so, follow the guide below.

1. Press “Windows” + “R” to open the Run prompt.
2. Type in “Control panel” and press “Enter” to launch the classical control panel interface.
3. Inside the Control Panel, click on the “View By:” option and select the “Large Icons” from the list of available options.
4. After selecting the Large Icons, click on the “Network and Sharing Centre” option.
5. In the Network and Sharing Centre, select the “Internet Options” option and from the left navigation pane at the bottom.
6. In the new window that opens up, click on the “Advanced” tab, and then select the “Restore Advanced Settings” option to reset the advanced network settings.
7. After this, press “Windows’ + “I” to open the Windows Settings.
8. In the settings, click on the “Network and Internet” option and select the “Status” button on the left side of the next screen.
9. Scroll down on the next screen until you reach the “Network Reset” option.
10. Click on the “Network Reset” option to prompt the computer to initiate the reset request and select the “Reset Now” button on the next screen.
11. Confirm any prompts that ask you if you really want to initiate a network reset and prepare to restart your computer.
12. The automatic prompt should wait for some time before initiating a restart so you should have some time to back up or save any work that you have unsaved.
13. When the computer restarts, you’ll notice that your network connection isn’t active. This is because your network card is firstly reset and then released its previous connection. Just select the network icon, pick the network you want to reconnect to, and choose “Connect”.
14. If your TCP/IP settings are set to automatically detect, your network connection should detect the appropriate network settings and connect to the ethernet without any problems.
15. Check to see if the issue still persists.

Method 8: Enable Ethernet Adapter Through BIOS

Some motherboard manufacturers might disable the ethernet connection from the Bios in the factory default settings or in some cases while tinkering around with the Bios, you might have disabled this setting yourself. Therefore, in this step, we will be enabling the Ethernet Adapter from the Bios. For that:

1. Make sure to completely shut down your computer and turn it back on after a while.
2. While the computer is being started, pay close attention to the “Press “X” button to get into the Bios” message that might appear during the startup.
3. Press the indicated key quickly and repeatedly to enter your computer’s BIOS. Once in the BIOS, you can use the arrow keys on your keyboard to navigate through the available options.
4. Find “Integrated Peripherals,” “Onboard Devices,” “On-Chip PCI Devices,” or a similar option and press the “Enter” key to access the menu. Depending on the type and year of your BIOS, the exact menu text will vary.

   Note: Generally, you should find something that indicates the settings are related to your onboard integrated peripherals.

5. Find and select “Integrated LAN,” “Onboard Ethernet,” or a similar option and use the left and right arrow keys to cycle through the available options. In most cases, these are either “Enabled” or “Disabled.”
6. Press the “F10” keyboard key, this should display a dialog asking if you would like to save your settings and exit the BIOS. Press the “Y” keyboard button to confirm. This causes the computer to reboot. Windows should now automatically detect and use your Ethernet controller.
7. Check to see if the issue still persists.

Method 9: Run the Internet Connection Troubleshooter

If due to some issue, you are still unable to get your ethernet connection functioning properly, a great option to try with Windows 10 is to run the internet troubleshooter. Not only does it provide you the reason due to which the ethernet isn’t working, but it might also attempt to fix the issue. In order to run the troubleshooter, follow the guide below.

1. Press “Windows” + “I” on your keyboard to launch the settings.
2. In the Settings, navigate to “Update & Security” option and afterward choose “Troubleshoot”.
3. Click on the “Network Connections” option and then select the “Run the troubleshooter” option to successfully run this troubleshooter on your computer.
4. Follow the on-screen instructions to completely run this troubleshooter and then check to see if the issue still persists.

Method 10: Ping the Loopback Address

A loopback address is a special IP address, 127.0. 0.1, reserved by InterNIC for use in testing network cards. This IP address corresponds to the software loopback interface of the network card, which does not have hardware associated with it, and does not require a physical connection to a network. Some users have highlighted that this issue may arise due to system corruption or malware installed that prevents networking from functioning properly, hence perform the ping operation to verify whether your network card is working properly or not:

1. Press “Windows” + “R” to open the Run prompt.
2. Inside the Run prompt, type in “cmd” and then press “Shift’ + “Ctrl” + “Enter” to provide administrative privileges.
3. Type the command, ping 127.0.0.1. This will send a message to the internal network stack on the machine. A response similar to the following should occur:

   Pinging 127.0.0.1 with 32 bytes of data: Reply from 127.0.0.1: bytes=32 time<10ms TTL=128 Reply from 127.0.0.1: bytes=32 time<10ms TTL=128 Reply from 127.0.0.1: bytes=32 time<10ms TTL=128 Reply from 127.0.0.1: bytes=32 time<10ms TTL=128 Ping statistics for 127.0.0.1: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milliseconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms

4. If the command prompt is successful in pinging the IP Address, it means that networking should be working on your computer and the issue most probably lies within a software misconfiguration and you may continue to implement these fixes on your computer.

Method 11: Verify Router’s Firmware

There are often new firmware updates to a router/Access Point that may resolve some issues. These are especially for the equipment more than a few years old that is running the original firmware. Consult the equipment manufacturer’s product documentation or website for details and instructions on how to perform an update.

Often, vendors of the router/Access Points will add features to improve their product. Unfortunately, these extra features are not always compatible with all wired hardware. Consult the product documentation or manufacturer’s website for the router/Access Point about the possible need to disable these features.

Method 12: Reset Network Stack

If you are still unable to fix this issue on your computer, it might mean that the computer has acquired it as a result of some corrupted DNS cache or due to invalid network cache. Therefore, in this step, we will be completely resetting the network stack which should get rid of this invalid cache and replace it with a newly generated one. In order to do that:

1. Press “Windows” + “R” to open the Run prompt.
2. Type in “Cmd” and then press “Shift” + “Ctrl” + “Enter” to provide admin permissions.
3. Inside the command prompt, type in the following commands and press “Enter” after each to execute it on your computer.

   ipconfig /release ipconfig /flushdns ipconfig /renew netsh int ip reset netsh winsock reset

4. After executing these commands on your computer, make sure to perform a complete restart to ensure that they are properly executed.
5. Check to see if the issue still persists.

Note: Please note that these commands affect all of your networking adapters, both physical and virtual, both used and unused, so you will see some errors when running these commands, where the resets targeted adapters that are not being used. These errors are perfectly normal, and not a cause for concern. Please complete each step, in order, even if you have done some of these previously, and even if you encounter errors.

Method 13: Disable Virtual Ethernet Devices

If you haven’t found a solution yet and are still receiving Ethernet port error then you should try to remove any virtual Ethernet drivers on your PC as these can cause major issues with how your PC connects to the internet. A virtual Ethernet driver could be anything from a VPN to software designed to improve ping or packet loss. You can find virtual Ethernet devices and disable them by following the steps below.

1. Press “Windows” + “R” to open the Run prompt.
2. In the Run prompt, type in “ncpa.cpl” and press “Enter” to open the network configuration panel.
3. In the network configuration, right-click on any entry that seems to belong to software and is not a physical connection that your computer is connected to.
4. Select the “Disable” option to disable the virtual network connection.
5. If you’re unsure, you can Google the name of each network device to learn more before disabling them.

Method 14: Disable Auto-Tuning Feature

The Window Auto–Tuning feature lets the operating system continually monitor routing conditions such as bandwidth, network delay, and application delay. Although it lets the operating system configure connections by scaling the TCP window to maximize the network performance it has proved to be the potential culprit in this case. Hence, temporarily disable the auto-tuning feature to get rid of the Ethernet port problem:

1. Press “Windows” + “R” to open the Run prompt.
2. Inside the Run prompt, Type in “cmd” and then press “Shift” + “Ctrl” + “Enter” to launch with administrative privileges.
3. Type in the following command inside the command prompt and press “Enter” to execute it.

   netsh interface tcp show global

5. Now, look for the Receive Window Auto-Tuning Level feature and if it’s normal, disable it.
6. In order to disable it, type in the following command and press “Enter” to execute it.

   netsh int tcp set global autotuninglevel=disabled

7. After the commands have been executed, check to see if the issue still exists.

Method 15: Tweak Duplex Settings

There are two types of duplex settings used for communications on an Ethernet network: Half-duplex and full-duplex. According to users, sometimes you might experience Ethernet problems due to your duplex settings. After changing your duplex settings not only the Ethernet port problem would be resolved but your LAN speed will also increase.

1. Press “Windows” + “R” to open the Run prompt.
2. Type in “ncpa.cpl” and press “Enter” to launch the network configuration panel.
3. Inside the network configuration panel, right-click on your ethernet connection and then select “Properties” to open the ethernet properties.
4. In the ethernet properties, navigate to the “Advanced” tab and select “Speed/duplex settings”.
5. Now set Value to “100 MB Full Duplex”. You can also try other 100MB values, or you can use “Auto Negotiation”
6. After doing that, click “OK” to save your changes.
7. Check to see if making this change has fixed our issue.

Method 16: Disable Large Send Offload (LSO)

Large Send Offload is one of the latest features in Windows 10. LSO is actually meant to improve the overall network performance of the system, but contrary to its purpose, this feature actually allows background applications to consume a considerably large amount of network bandwidth. Some users reported that they were able to get around this problem by disabling this feature on their Operating systems:

1. Press “Windows” + “R” to open the Run prompt, type in “Devmgmt.msc” in the run prompt and press “Enter” to launch the device manager.
2. Double click on the “Network Adapters” panel to expand it and right-click on the network adapter that your computer is using.
3. Select the “Properties” option to launch the network properties.
4. Inside the network adapter properties, click on the “Advanced” tab from the top.
5. Select “Large Send Offload V2 (IPv4)” and set the value to “Disabled”.
6. Do the same for “Large Send Offload V2 (IPv6)” and click “OK”.

Method 17: Resolve Issues With Your Network Adapter

There may be some underlying issues with your network adapter that can be quickly diagnosed within the Windows control panel. If you’ve already updated your network adapter drivers, follow the steps below to try and diagnose other issues.

1. Press “Windows” + “R” to open the Run prompt.
2. Type in “ncpa.cpl” and press “Enter” to launch the network configuration panel.
3. In the network configurations, right-click on the ethernet adapter and select the “Diagnose” option.
4. Let the automatic diagnosing begin and follow the on-screen instructions to fully diagnose issues with the ethernet connection.
5. Check to see if running the diagnose window fixes this issue.

By default, if your network adapter is set to use a static IP address but it should be using DHCP, this should fix it. However, it’s a good idea to check yourself too.

Method 18: Verify Whether Ethernet Port is configured for Dynamic IP

If your computer is unable to communicate with other networked devices or connect to the Internet via Ethernet, check your network settings to confirm that the Ethernet port is configured for a dynamic IP address.

1. Click on the start menu icon and select the “Settings’ option.
2. Click the “Network and Internet” button to open internet settings.
3. Afterward, choose the “Network and Sharing Center” option and from the window opened at front choose “Change Adapter Settings” in the window’s left menu.
4. Right-click the “Local Area Connection” icon in Windows 7 or the “Wired Ethernet Connection” icon in Windows 8/10 and select “Properties.”
5. Double-click “Internet Protocol Version 6 (TCP/IPv6)”
6. Confirm that the “Use the Following DNS Address” button is checked.

   Note: Get ahold of a PC that is working correctly with the ethernet connection, and monitor its network adapter settings from the “Network and Internet” option in Windows Settings and then from going into the “Status” option. The IP Address and the DNS address that it is using should be listed there, enter this information in its place and you should be able to get your ethernet back to work.

7. Now, double-click “Internet Protocol Version 4 (TCP/IPv4).”
8. Confirm that the “Use the Following DNS Addresses” radio button is selected and click “OK.”

   Note: Enter the same information that we obtained from the sixth step.

9. Now, close all remaining windows to return to the desktop.

Method 19: Decrease Your network adapter’s power output

The network adapter allows the device to communicate over the local area network (LAN), connecting to the internet or to other computers. Some computer geeks reported that they were able to get around this problem by reducing the power output of their network adapter, therefore, follow the steps throughout to get rid of this problem:

1. Press “Windows” + “R” to open the Run prompt, type in “Devmgmt.msc” in the run prompt and press “Enter” to launch the device manager.
2. Double click on the “Network Adapters” panel to expand it and right-click on the network adapter that your computer is using.
3. Select the “Properties” option to launch the network properties.
4. Navigate to the “Advanced”
5. Under Property, locate the “Power Output property” and click on it to select it.
6. Open the dropdown menu under Value and change it from 100% to 75%. If you are also going to be using an external monitor while your laptop is docked, change the value to 50% instead of 75%.
7. Click on “OK”, close the Device Manager, and restart your computer. Now check whether or not the issue has been resolved once your computer boots up.

Method 20: Disable Energy Efficient Ethernet for your network adapter

Energy-Efficient Ethernet (EEE) is a set of enhancements to the twisted-pair and backplane Ethernet family of computer networking standards that reduce power consumption during periods of low data activity. Hence, to reduce the power consumption of modem at the idle state and get rid of the Ethernet problem disable energy-efficient Ethernet by following the steps indexed below.

1. Press the “Windows Logo key + X” to open the Menu.
2. Click on “Device Manager” in the menu to launch the Device Manager.
3. In the Device Manager, double-click on the “Network adapters” section to expand it.
4. Right-click on your computer’s active network adapter and click on “Properties”.
5. Navigate to the “Advanced” tab.
6. Under Property, locate the “Energy Efficient Ethernet” property and click on it to select it.
7. Open the dropdown menu under Value and change it to “Disabled” or “OFF” whichever applies in your case.
8. Click on “OK” and close the Device Manager.
9. Restart your computer and When your computer starts up, go ahead and check whether the issue still persists.

Method 21: Enable QoS Feature

You might be able to solve this problem by enabling the QoS feature. This feature is in charge of limiting your network speed, but a couple of users reported that the issue was resolved after enabling QoS on their router. To do this, you need to open your router’s configuration page and enable QoS. We have to mention that QoS is an advanced feature, so it might require some configuration before you can properly use it. It’s also worth noting that this feature might not be available on your router, so be sure to check your router’s instruction manual for more information. In order to login to your router’s admin panel:

1. Launch your browser and type in your IP address in the address bar.
2. In order to find our IP address, press “Windows” + ” “R” to launch the run prompt. Type in “CMD” and press “Shift” + “Ctrl” + “Enter” to provide admin permissions. Also, type in “ipconfig/all” in the cmd and press “Enter”. The IP Address that you have to enter should be listed in front of the “Default Gateway” option and should look something like “192.xxx.x.x”.
3. After entering the IP Address, press “Enter” to open the Router login page.
4. Enter your username and password in the respective categories on the router’s login page both of which should be written on the back of your router. If they aren’t, the default values should be “Admin” and “admin” for both the password and the username.
5. After logging in to the router, look to configure the QoS settings as mentioned above and check to see if configuring it fixes this issue.

Method 22: Connect USB to Ethernet Adapter

A USB to Ethernet adapter is a device that is capable of connecting a USB port to an Ethernet cable. USB to Ethernet adapters allow the users to connect multiple devices together via an Ethernet cable which is generally shorter and less reliable. USB to Ethernet adapters rely on Plug and Play technology that allows a user to simply plug the device into any USB port and then connect an Ethernet cable to it. If you are facing the Ethernet port problem then this adapter might be able to do the job for you.

Method 23: Remove any USB devices from the ports below the Ethernet port

If you have any USB devices connected to the USB ports located directly below the Ethernet port, remove these devices, and see if that resolves the problem for you. While it may sound a bit peculiar, something as bizarre as having one or more USB devices connected via the ports located below the Ethernet port is the culprit behind this problem for many people.

Workaround: If you’re sure that there’s nothing wrong with the Ethernet connection, you can check other places like the ports on the router. If the Ethernet port being used is not working or damaged, you will be unable to connect to the router. As for the Ethernet port not working cause, unplug the cable and plug it into another port to check whether the issue still appears.