Another "ethernet" doesn't have a valid ip configuration

Radar90

Commendable
Mar 15, 2016
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0
1,510
I have a Compaq CQ58 and after a recent Windows 10 update I can't get either a LAN or WiFi internet connection. I have followed various suggestions but I still keep getting the error message. I have reinstalled the original drivers but that hasn't helped. I'm beginning to lose patience after spending many hours trying to sort the issue out. The Ethernet Controller is a RealTek PCIe FE Family Controller. I've checked the Router and I know it's working as I am connected via my iPad (WiFi). Just hope someone can help provide some techie help to solve this issue. kind regards
 
Solution
Have you tried another known working ethernet cable?

Do you know how or have you looked at the ethernet adapter configuration?

Post your router's make and model plus "ipconfig /all" from your Compaq CQ58.

Thanks.

Radar90

Commendable
Mar 15, 2016
6
0
1,510
Hi I have tried several Ethernet cables and all work with another laptop but this laptop just won't hook-up either via Ethernet or WiFi.
Not sure how I can copy the ipconfig /all report as I'm sending this from an iPad although I have captured the information into a photo. Is there something I should be looking for and relay?
 

Radar90

Commendable
Mar 15, 2016
6
0
1,510
The router is a Virgin Media Super Hub VMDG480
How do I look at the Ethernet adapter's configuration.
This whole issue happened after a Windows 10 update!
That might help
I have; as earlier stated run the ipconfig /all and have a pdf of it but I don't know how to attach it through my iPad, sorry
 

Ralston18

Titan
Moderator
ipconfig will tell you about the IP address being used by your router and that ip address and subnet masking must match the laptop's configuration which is also presented.

E.g., Home routers typically use 192.168.1.1 for private/home IP address with a subnet mask of 255.255.255.0. (10.0.0.1 is another common address.)

Not having valid IP indicates that the laptop does not know where to ask for an IP address assignment. It is either looking for a non-existent router or not have the correct router address. (Excluding any physical loss of connectivity which would have the same effect. That is why swapping a cable is the first step to try....)

The router in turn is configured to assign IP addresses to its connected devices using some designated range of IP addressess. 192.168.1.10 to 192.168.1.20 as an example. You can also allow for static IP addresses that are reserved for printers, network storage devices, and other devices via their MAC.

ipconfig also presents some other information. Explaining all that would quickly become a TL-DR posting. Just google "ipconfig /all" and peruse some the links you find.

Knowing the router's make and model plus seeing the ipconfig of the Compaq will tell us a combination of what is expected with respect to the IP addresses and what is being used. Gets a bit more involved if you or someone has changed the default settings which can happen and is permitted. Just easy to make a typo or have some other configuration component (subnet mask perhaps) that prevents network communications.

Can happen at either or both the router and the attacthed device.
 

Radar90

Commendable
Mar 15, 2016
6
0
1,510
Hi Ralston18, firstly many thanks for all your help so far. I have now managed to get a copy of the ipconfig /all report and its listed at the end of my reply.
The IP address range starts at 192.168.0.2 to 192.168.0.254 (max 253 users) at present the Subnet mask: 255.255.255.0
I note the ipconfig /all report lists the 'Ethernet adapter Ethernet' - Autoconfiguration IPv4 address: 169.254.24.237 (preferred). I don't know if that is of any significance
==========================================
Microsoft Windows [Version 10.0.10586]
(c) 2015 Microsoft Corporation. All rights reserved.

C:\WINDOWS\system32>ipconfig /all

Windows IP Configuration

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

Wireless LAN adapter WiFi:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Ralink RT5390R 802.11bgn Wi-Fi Adapter
Physical Address. . . . . . . . . : 08-3E-8E-15-A6-65
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Local Area Connection* 7:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter
Physical Address. . . . . . . . . : 08-3E-8E-15-A6-67
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Ethernet:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek PCIe FE Family Controller
Physical Address. . . . . . . . . : B4-B5-2F-36-D4-0B
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::6533:72b5:faef:18ed%12(Preferred)
Autoconfiguration IPv4 Address. . : 169.254.24.237(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
DHCPv6 IAID . . . . . . . . . . . : 481604911
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1C-17-83-D4-B4-B5-2F-36-D4-0B
DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
NetBIOS over Tcpip. . . . . . . . : Enabled

C:\WINDOWS\system32>
 

Ralston18

Titan
Moderator
The 169.254.24.237 IP address is one of the addresses Microsoft assigns itself when it cannot otherwise obtain an IP address. (Normally obtained from the router.)

That leads me to believe that your Realtek PCIe FE Family Controller may not be configured correctly. You need to open the Network and Sharing Center to check the configuration.

Select "Change adapter settings" in the upper left corner. Click to select the Realtek PCIe FE Family Controller as listed under Device Name. Make sure your ethernet network adapter is enabled. The wireless adapters should be disabled.

Then right- click the Realtek adapter get the drop down menu. Select the Status screen. Click Details - just to look at the settings. Also note the Diagnose button on the screen.

You should see an IPv4 IP address, an IPv4 subnet mask, and and IPv4 DHCP Server address.

The IPv4 subnet mask should be the same as your router and the IPv4 DHCP Server and IPv4 Default Gateway should be your router's IP. (Virgin Media Super Hub default/factory setting IP is 192.168.0.1 which corresponds to the DHCP IP range you provided. Subnet mask 255.255.255.0.

If those settings do not match, go back to the Network Connections screen and run "Diagnose this connection". Windows may be able to correct.

Failing that, then uninstall and reinstall the Realtek adapter taking care to match the configuation to your router. I.e., the adapter goes to the router (192.168.0.1, subnet 255.255.255.0 and requests a DHCP assigned IP.

Hopefully that will fix things. If not send another ipconfig /all posting and we will revisit the problem.
 

Radar90

Commendable
Mar 15, 2016
6
0
1,510
Hi Ralston18
Thanks again for your advice which I followed to the letter but unfortunately still no success. I've attached the ipconfig /all report results below.

==============================================================================
Microsoft Windows [Version 10.0.10586]
(c) 2015 Microsoft Corporation. All rights reserved.

C:\WINDOWS\system32>ipconfig /all

Windows IP Configuration

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

Ethernet adapter Ethernet:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek PCIe FE Family Controller
Physical Address. . . . . . . . . : B4-B5-2F-36-D4-0B
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 192.162.0.1(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
IPv4 Address. . . . . . . . . . . : 192.168.0.11(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . : Enabled

C:\WINDOWS\system32>
 

Ralston18

Titan
Moderator
Per your ipconfig I can see that DHCP is disabled on the ethernet card.

And the ethernet card seems to have a static IP 192.162.0.1 with no default gateway. Default Gateway should be your router's 192.168.0.1 unless that was changed.

Change your ethernet adapter setting to use DHCP. Restart.

 

Radar90

Commendable
Mar 15, 2016
6
0
1,510
Hi Ralston18
Again followed your advice and DHCP is now enabled but I note the autoconfiguration IPv4 is set to 169.254.171.199 which you mentioned previopuisly was microsofts default. How do I get that reset and to what?

=====================================================
C:\WINDOWS\system32>ipconfig /all

Windows IP Configuration

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

Ethernet adapter Ethernet:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek PCIe FE Family Controller
Physical Address. . . . . . . . . : B4-B5-2F-36-D4-0B
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::501d:57cf:1011:abc7%17(Preferred)
Autoconfiguration IPv4 Address. . : 169.254.171.199(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
DHCPv6 IAID . . . . . . . . . . . : 297055535
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1C-17-83-D4-B4-B5-2F-36-D4-0B
DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
NetBIOS over Tcpip. . . . . . . . : Enabled

C:\WINDOWS\system32>
 

Ralston18

Titan
Moderator
Yes I can see that DHCP is now enabled.

Need to dig in a bit deeper: Can you go into your Event Viewer logs and look for errors/warnings with respect to network activity? May find a clue there.

Also run "perfmon /rel" from the Run box and look for red circles with white "x's" insided. You can click the listings for more details.

You downloaded the original drivers: have you looked for Windows 10 drivers via Real Tek?

Might be worthwhile to uninstall the existing drivers, disable the ethernet card, and start again from the begining using a fresh driver. Also select automatically obtain IP via DHCP during the installation setup.