Windows 7: Unidentified Network/Internet access

Try running

system file checker to sure the system file integrity.

Open elevated command prompt.
Enter:
sfc /scannow


SFC /SCANNOW Command - System File Checker

When you look at Add/remove programs, does it list any type of Intel software there?

The so called wireless connection software's can cause problems sometimes.

Thanks for that. I ran it and no problems were found.

Yes. They are:

Intel Desktop Utilities
Intel Integrator Assistant
Intel Network Connections
Intel Control Center
Intel HD Graphics Driver
Intel Management Engine Components

Thanks.

Please uninstall the Intel Network Connections software.

OK...I did that, but as expected I now have no LAN connection either.
I already downloaded the update from the Intel site and reloaded that last week, so not sure what next.
Thanks.

Ok, I'll assume that you reinstalled the software.

The only possibility is that something is blocking the connection, most likely an A/V software which may be installed on the system or was removed at one time.

Have you tried to start up in safe mode with Networking to see if the problem persists?


This Unidentified Network problem is fairly common but there are many solutions. The link below mentions one type of fix where you type the default gateway into the IPv4 properties.

There are many other solutions in the comment section below the main article.

http://pocketpccentral.net/blog/2009...blem-resolved/

Thanks Chev...I will go through those.

I did try the safe-mode with Net last week, and the same thing.
I have Microsoft Security Essentials only on this PC...It's the only AV that has been installed. I did turn that off also, but same results. Turned Windows Firewall off also.

It's pretty consistent that it gives me ~5 minutes of internet access, then cuts off. All mapped drives on the LAN remain working.

Thanks.

This 5 minute time limit is very strange and probably impossible to track down the source, usually something installed on the system would cause this but safe mode with networking usually will weed that out.

You might try running my IPresetAll file, in case it's a strange problem with the network stack or something else, this will reset everything in the network. Just unzip and run the file, your machine will reboot itself.