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ethernet not connecting


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#1
thijsC

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Hey guys

 

 

So my problem summarized:

- when cable at dorm is plugged in, windows troubleshooting gives "not a valid IP configuration". 

- cable at home DOES work, no problems there.

- tried reflushing through cmd, putting in a static IP, various other troubleshooting things, no effect.

- new PC so did nothing with settings.

- the cable on dorm did work on old PC, but that also took a while.

- pinging gives a result with 127.0.0.1, pinging a site does not work. 

 

My questions: is it possible that the ethernet requires some special settings? the dorm keeper said there is no such thing installed, he did reset the router several time. I have tried to play with various settings but without result.

 

Will post other info like ipconfig (/all) if necessary.


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#2
SpywareDr

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Try this:

  • On your Windows computer, press [Ctrl][Esc] to bring up the Search box.
  • Copy and paste in the following command into the Search box

    cmd /c ipconfig /all>0&notepad 0

    and then press [Enter].
  • A Notepad window will open with the results from an IPCONFIG /ALL command. Press [Ctrl][A] to highlight everything in the Notepad windows, then press [Ctrl][C] to copy it into memory on your computer.
  • Start a reply to this thread, click once in the reply box (to give it focus), then press [Ctrl][V] to paste in what you copied to memory.


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#3
thijsC

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Windows IP Configuration
 
   Host Name . . . . . . . . . . . . : LAPTOP-SGCUH4P4
   Primary Dns Suffix  . . . . . . . : 
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No
 
Ethernet adapter Ethernet:
 
   Connection-specific DNS Suffix  . : 
   Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
   Physical Address. . . . . . . . . : A8-1E-84-6E-CA-7A
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::3d13:82e8:427a:a61e%9(Preferred) 
   Autoconfiguration IPv4 Address. . : 169.254.166.30(Preferred) 
   Subnet Mask . . . . . . . . . . . : 255.255.0.0
   Default Gateway . . . . . . . . . : 
   DHCPv6 IAID . . . . . . . . . . . : 245898884
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-20-66-4D-C6-A8-1E-84-6E-CA-7A
   DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
                                       fec0:0:0:ffff::2%1
                                       fec0:0:0:ffff::3%1
   NetBIOS over Tcpip. . . . . . . . : Enabled
 
Ethernet adapter Bluetooth-netwerkverbinding:
 
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : 
   Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network)
   Physical Address. . . . . . . . . : 3C-A0-67-86-67-24
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
 
Tunnel adapter Teredo Tunneling Pseudo-Interface:
 
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : 
   Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
 
 
Had to do it in cmd admin. Hope you can get something from this :/

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#4
SpywareDr

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Yes, an IP Address that starts with "169.n.n.n" means you're not getting an IP Address from the router. When that happens, Windows automatically assigns an IP Address of 169.n.n.n so you can at least connect to the local network. 169.n.n.n IP Addresses are private and cannot be used on public networks like the internet.

 

Try disabling IPv6 addressing, reboot and see if you now get an IPv4 address other than one starting with 169.n.n.n.


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#5
thijsC

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Ethernet adapter Ethernet:
 
   Connection-specific DNS Suffix  . : 
   Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
   Physical Address. . . . . . . . . : A8-1E-84-6E-CA-7A
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Autoconfiguration IPv4 Address. . : 169.254.166.30(Preferred) 
   Subnet Mask . . . . . . . . . . . : 255.255.0.0
   Default Gateway . . . . . . . . . : 
   NetBIOS over Tcpip. . . . . . . . : Enabled
 
 
yes, still the same.

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#6
SpywareDr

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For some reason, the router you are attempting to connect to is not assigning your computer an IP Address.


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#7
thijsC

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So this is not something I can fix through settings from my pc? The router is the fault of the problem? What else can be done, because resetting the router is not helping.


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#8
SpywareDr

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Will the router hand out a valid IP Address to another device that is connected through the same cable and to the same port on the router?

 

Does the problem computer get a valid IP Address in Windows' Safe Mode with Networking, or when running a different OS (from a USB key/flash drive)?


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#9
thijsC

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Ipconfig from safe mode: 

 

 

Ethernet adapter Ethernet:
 
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
   Physical Address. . . . . . . . . : A8-1E-84-6E-CA-7A
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   IPv4 Address. . . . . . . . . . . : 169.254.166.45(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 169.254.166.254
   NetBIOS over Tcpip. . . . . . . . : Enabled
 
A pic from my old pc:
 
aqIXg.jpeg

Edited by thijsC, Yesterday, 10:57 AM.

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#10
SpywareDr

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A computer with an IPv4 Address starting with 169.n.n.n is NOT being assigned an IP Address by the router.

 

A computer with an IPv4 Address starting with 192.168.n.n IS being assigned an IP Address by the router.

 

--

 

Will the problem computer get a valid IP Address when connected with the same cable to another router? If no, there may be a problem with the Ethernet cable or the Ethernet port on the computer.


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#11
thijsC

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The same cable did work on another pc, and I have tried other cables (only from my plug in the wall). The port should work because it does work at home.. 

 

Still thanks a lot man!

 

What IP and dns do I have to use for trying a static IP? I did 192.168.1.34 / 255.255.255.0 / 192.168.1.254 and 8.8.8.8 / 8.8.4.4 already but with no result.

 

But if I understand correctly, the problem lies with the router for not acting like a DHCP server and giving me an IP? maybe resetting the router to fabric settings could help?


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#12
SpywareDr

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If you're certain the problem isn't computer hardware, then yes, it's probably a router issue.

 

You would have to check the router to make sure the 192.168.1.34 is within the range of IP Addresses it's setup to hand out.


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