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Jayliss

Ethernet Cable not working

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Posted · Original PosterOP

Specs... 

 

mobo - B150M-D3H

GPU - GTX 1060

CPU - i7 6700

RAM - 16GB DDR4

OS - windows 10 pro

 

 Ethernet cable was working now it just shows unidentified network. I have swapped out the cable so it's not that. I don't have a network card. Is it the IPv4 settings? They are still on automatic.

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-Moved to Networking-

 

Did you download and install the LAN drivers from your motherboard's support page?

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This could have to do with your router if other devices on your network are doing the same thing.

 

Otherwise you can try disabling and re-enabling the interface.

You can try running the ipconfig /renew command assuming the problem is layer 3.

You can check if the driver is installed like Crunchy Dragon said.

You can try an old fashion restart of the computer. Might be as easy as a fluke.

 

Try those starting with what's easiest and come back if none help.

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Run command: ipconfig /all

in command prompt and send output.

Sounds like DHCP is not working on your network.

 

In ipconfig output.

 

If your IP address is within range 169.254.X.X, DHCP is outright just not working which could be for a number of reasons.

 

If your IP address is within 10.X.X.X or 192.168.X.X. Check the IPv4 gateway field in the ipconfig output. Make sure this is your Routers IP address. If not you could have a rogue DHCP server on your network. Could be new WiFi access point on your network?

 

ping 8.8.8.8 do you get a response? If you do and internet is down your DNS server is broken or not reachable. Try ping google.com. If this fails but pinging direct IP works, set a static DNS server in your NIC IPv4 settings 8.8.8.8 which would confirm if your DNS is failing.

 

ping you default gateway, do you get a response?

 

Command Prompt Example:

ping 192.168.1.254

 

Request time out means its not working.

 

run arp -a output. Make sure the IP address mapped to MAC address is correct. You can perform a MAC lookup on your router or use a 3rd party website to check vendor of the MAC.

 

Let me know how you go and we can move on to next steps.

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Posted · Original PosterOP

Hi my ipconfig is 169.254.71.102 . 8.8.8.8 failed to generate results and pinging google doesn't work. What can I do to fix this issue?

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31 minutes ago, Jayliss said:

Hi my ipconfig is 169.254.71.102 . 8.8.8.8 failed to generate results and pinging google doesn't work. What can I do to fix this issue?

That points to your computer not getting a DHCP response.

 

The easiest thing to try first, is to move your computer to a different port. It may simply be a dead switch port

 

It's also possible both cables are faulty, so if you can I would also try one of the suspect cables on another device that  would rule it out.

 

Speaking of other devices, you can confirm whether the port is faulty by swapping another device into the port your computer was connected to.

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Do as Nene says, If the problem is isolated to your PC next try:

 

 - Is the windows DHCP service started?

 

In command prompt

sc query dhcp

 

You should see the state as running: (See below)

 

SERVICE_NAME: dhcp
        TYPE               : 30  WIN32
        STATE              : 4  RUNNING
                                (STOPPABLE, NOT_PAUSABLE, ACCEPTS_SHUTDOWN)
        WIN32_EXIT_CODE    : 0  (0x0)
        SERVICE_EXIT_CODE  : 0  (0x0)
        CHECKPOINT         : 0x0
        WAIT_HINT          : 0x0

 

 - Try reset all your windows networking to default

 

1. Run CMD as admin

2. execute command: netsh winsock reset

 

 

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