Unidentified network - No Internet access (Win 8.1 pro)

[Frooosh]

Hello. So when I woke up this morning I found that I can no longer connect to the internet on my desktop computer. It worked perfectly fine last night but alas, not today. I'm living in a dorm so I can't access or change the network itself. My laptop (which is also connected by cable) works just fine. I have tried:

*Restarting the computer several times
*Changing cables
*Manually changing ip and dns to that of my laptops
*Disabling windows firewall
*Using the troubleshoot feature in windows

to no avail. When I type ipconfig/all in command prompt I get:

Ethernet adapter Ethernet 3:
Connection-specific DNS Suffix.:
Description................................: Realtek PCIe GBE Family Controller#3
Physical Address.......................: 94-DE-80-7F-5E-88
DHCP Enabled..........................: Yes
Autoconfiguration Enabled........: Yes
Link-local IPv6 Address.............: fe80::4966:2ec0:f07e:b31d%8 (Preferred)
Autoconfiguration IPv4 Address.: 169.254.179.29 (Preferred)
Subnet Mask..............................: 255.255.0.0
Default Gateway.........................:
DHCPv6 IAID..............................: 143974016
DHCPv6 Client DUID..................: 00-01-00-01-1D-0C-E1-AD-60-E5-49-5F-28-7B

DNS Servers..............................: fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
NetBIOS over Tcpip....................: Enabled

Tunnel adapter isatap. {F1A1CE22-D7D1-4D6F-A537-A70C590A44D6}:
Media State................................: Media disconnected
Connection-specific DNS Suffix..:
Description.................................: Microsoft ISATAP Adapter#3
Physical Address........................: 00-00-00-00-00-00-00-E0
DHCP Enabled...........................: No
Autoconfiguration Enabled.........: Yes

When I try to ipconfig/release I get the very same numbers as above, and when I ipconfig/renew nothing happens at all.

This is the ipconfig/all of my laptop, which works:
Ethernet adapter Ethernet:
Connection-specific DNS Suffix.: .
Description................................: Realtek PCIe FE Family Controller
Physical Address.......................: 74-86-7A-06-8C-82
DHCP Enabled..........................: Yes
Autoconfiguration Enabled........: Yes
Link-local IPv6 Address.............: (Im not supposed to type this out right?)
IPv4 Address.............................: (Im not supposed to type this out right?)
Subnet mask.............................: (255.255.255.192)
Lease Obtained........................: 24th sep
Lease Expires...........................: 29th sep
Default Gateway.......................: 46.236.109.1
DHCP Server............................: 85.11.0.101
DHCPv6 IAID............................: 259294842
DHCPv6 Client DUID................: 00-01-00-01-18-DF-07-4B-74-86-7A-07-8C-82
DNS Servers............................: 80.244.65.130
80.244.65.3
NetBIOS over Tcpip..................: Enabled

Also got bunch of numbers for
Wireless Lan adapter
Ethernet adapter Bluetooth
Wireless Lan adapter Wi-Fi
Tunnel adapter Teredo Tunneling Pseudo-Interface
Tunnel adapter isatap
Tunnel adapter 6T04_Adapter

ipconfig/release and /renew works just fine on my laptop.

Please ask if you need anything else, and I'm so grateful for any help!

edit: I wrote that nothing happens when I typed ipconfig/renew on my desktop, but apparently it was just loading for a long, long time. This is what came back: "An error occurred while renewing interface Ethernet 3: unable to contact your DHCP server. Request has timed out."

 

[grana92]

Reinstall the network driver. If that doesn't help, buy a new network card. It's failing to obtain the default gateway, this usually occurs with faulty network modules. I had several same situations. One more thing you could do is look at the network jack on your PC, when it's connected you'll have two LED-s, one signals a stable connection. The other one signals network activity. If your activity LED (usually green) is blinking slow or not blinking at all, your network module is broken.

 

[Joe Porter]

Enter command prompt as administrator and type the following then restart your computer and see if you get a connection.

netsh winsock reset catalog

 

[Frooosh]

Ok, so I uninstalled the driver and installed a new one but that did nothing. The lights on the card seems fine, one solid green light with a flashing orange.


I also ran the command to reset the catalog that Joe suggested, but neither solved the problem. Is buying a new card the only thing left to do?

 

[Joe Porter]

Probably have already tried this but have you unplugged the router for thirty seconds plugged it back in and then restarted your PC?

 

[Frooosh]

Probably have already tried this but have you unplugged the router for thirty seconds plugged it back in and then restarted your PC?

No see I live in a student room so all I got is a jack in the wall where you plug in your ethernet cable. But plugging the same cable into my laptop works just fine, so the problem has to be on my desktops end right? The weird thing is that it happened over night, and my pc was turned off. Can it break so randomly?

 

[DeadlyDays]

Actually I'm thinking the DHCP service isn't assigning him an address, which is why he has a 169.x.x.x address which is what windows automatically assigns you if DHCP doesn't respond.

You can try a static IP address on the same subnet and the rest of the settings the same as the device that works and hope you don't pick one someone else is using and see if it connects?

I'm not good at ipv6, I see he is has an ipv6 address, if it is using ipv6 on the network then I cannot help and what I said probaly doesn't apply.

 

[grana92]

Here's a no-brain-er, did you contact your system admin? Maybe your mac address was banned due to excess downloading?

Anyway, trying with a new network card is the easiest, they are pretty cheap and you can always return it if that doesn't work, but i doubt it wont..