Ethernet problem

General Topics
1

Hello!

I need some non-Avast-related help. I bought a new laptop - Lenovo G770. I installed Widnwos 7 and all the drivers but I can’t connect to the internet by cable. Only wireless works. When I connect the cable the connection icon shows an exclamation mark. Troubleshooting says that my local area connection doesn’t have a valid IP configuration. If I connect my other laptop (Sony Vaio) to that same cable the internet works without problems there.

I formatted the Lenovo disk, installed all the drivers, tried many things - nothing. Please help. :slight_smile:

2

Does you have the right IP version installed? Open up a command prompt and type “ipconfig /all” post the results for your Local Area Connection here,

polonus

3

Hello Polonus!

I don’t know if I have the right IP version installed. Wireless connection works, but the cable connection doesn’t. Here are my results:

C:>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : haha-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Wireless LAN adapter Wireless Network Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Atheros AR9285 Wireless Network Adapter
Physical Address. . . . . . . . . : 44-6D-57-02-1C-65
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::b9e7:8563:93ad:8064%12(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.100(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 18. oktober 2012 23:48:43
Lease Expires . . . . . . . . . . : 19. oktober 2012 2:48:44
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DHCPv6 IAID . . . . . . . . . . . : 306474327
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-18-12-12-9D-DC-0E-A1-D8-06-18

DNS Servers . . . . . . . . . . . : 192.168.1.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Atheros AR8152/8158 PCI-E Fast Ethernet Controller (NDIS 6.20)
Physical Address. . . . . . . . . : DC-0E-A1-D8-06-18
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::5dcf:55d:d78e:b404%11(Preferred)
Autoconfiguration IPv4 Address. . : 169.254.180.4(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
DHCPv6 IAID . . . . . . . . . . . : 249302689
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-18-12-12-9D-DC-0E-A1-D8-06-18

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.{574A0CD9-78B3-4DA9-9723-DC9DAAEDBFF7}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{F1C28E68-E813-4836-8C5F-7FA9B9293758}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Teredo Tunneling Pseudo-Interface:

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
IPv6 Address. . . . . . . . . . . : 2001:0:5ef5:79fb:8f0:164:3f57:fe9b(Preferred)
Link-local IPv6 Address . . . . . : fe80::8f0:164:3f57:fe9b%14(Preferred)
Default Gateway . . . . . . . . . : ::
NetBIOS over Tcpip. . . . . . . . : Disabled

4

Can anyone help me please?

5

I tried /flushdns, /release and /renew (ipconfig commands), but the problem is still here. Renew gives an error: unable to contact DHCP server. What can I do?

6

http://answers.microsoft.com/en-us/windows/forum/windows_vista-networking/invalid-ip-address-169254xx/ce096728-e2b7-4d54-80cc-52a4ed342870

Hi,not sure but this may apply to win 7 also.

7

Try running Farbar Service Scanner- http://www.bleepingcomputer.com/download/farbar-service-scanner/
Please post the log file.

Also, use Troubleshooting in control panel to troubleshoot network errors. See attachment. Not sure if this is what you meant by troubleshooting in your first post.

Go to Device Manager in control panel then network adapters to make certain there is no Ethernet error.

Are you hardwired to the router or hardwired directly to your modem?

What firewall are you using?

The Sony connects, I would compare settings with the Lenovo to see what is different.

8

try this

click start

click control panel

click Network and Internet link

click change adapter settings

right click Local Area Connection

click properties

click internet protocol version 4

make sure obtain ip address automaticaly

  • obtain dns server adress automaticaly

click ok to the 2 windows :slight_smile:

Anthony.

Default Gateway . . . . . . . . . :

it seems you are missing a default gateway in your settings.

9

Thank you all, very much! I’ve messed around today with it and the connection established only when I entered the other laptop’s IP, gateway, mask and DNS. At least now I know that my laptop/ethernet card isn’t faulty. :slight_smile: I will try the stuff you wrote me when I have time - and then post back. Again, thanx! :slight_smile:

10

actually, something like this happened to me some time ago, but the other way around. on my desktop (W7 SP1), hardwired to my router, I lost the internet connection. after using without problems the desktop for more than a year, all of the sudden my ethernet connection had the yellow exclamation mark on it and refused to connect to the internet. no matter what i tried, i couldn’t fix this. the only solution was to buy a wireless card. even today i still don’t know what went wrong.