Networking problem from hell

ok - thanks.

What would cause a problem on a machine where a network connection can be established, windows reports it has an internet connection but browsing the internet doesn't work properly? I know I tested the ethernet cable with a cable tester but I even tried a new piece of ethernet to rule that out, still causing me problems. Is it possible that the motherboard is causing these problems?

It is almost as if it is a DNS issue, but wirelessly the hub works fine and event ethernet from a different machine works fine (i.e my latop) so I guess it rules that out.
 
A long shot, but disable IPv6 on the adapter.

Wondering if that local link it's picking up might be interfering.
 
Ok - will try that but think I did try that before hand, I can't remember what I have and haven't tried :)

I've also borrowed a couple of Intel Pro/1000 PT dual port network cards and will see how those behave before jumping to wireless USB.

I think I've ruled pretty much everything out. Short of it being something to do with memory, cpu, motherboard which I can't believe it would be.
 
OK - I've installed the Intel Pro/1000 PT dual port card. Works fine on the network, can copy between laptop and desktop etc but I notice the internet browsing on the desktop still is not working. I also notice that after about 10 minutes of being connected via ethernet, the router stats on the HH3 show;

Line attentuation -0.2dB / 4.7 dB
Noise Margin 0.0 dB / 0.0dB
FEC Events (Down/Up) 1462032/34
CRC Events (Down/Up) 58798 /8

Looking at the stats now with just the laptop connected via wifi and it runs fine all the time;

Line attentuation 40.5 dB / 21.8 dB
Noise Margin 6.1 dB / 4.1 dB
FEC Events (Down/Up) 1391/4
CRC Events (Down/Up) 0/1

My downstream is 9029 and upstream is 1040.

Just wondering why, when ethernet is being used that I see these higher values?

I've installed the latest Intel drivers for the card and it ran a series of checks where is measured the length of ethernet cable and quality of connectors and it reported it as very good so no problems there.
 
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The method of connection should have zero impact on the wan-side statistics. So...

  • It could just be a coincidence.
  • The router could be faulty.
  • You're doing something odd.
 
I can't believe this ... I've just gone and bought a Netgear N150, which connects to my HH3 wirelessly just fine but again, I can't connect to the internet. It also takes down the broadband connection. If I shut off the desktop PC, the broadband light comes back on. Fire up the laptop and its all fine. What on earth is going on?
 
Well - its sorted now. I honestly can't remember what resolved it. BT flushed the lines whatever that means, I changed the machine name to something else, then changed it back again and changed one of the BIOS settings for plug and play to No instead of yes. Can't remember what it was supposed to be but I have re-set BIOS settings a number of times.

When I booted from ubuntu 11 liveCD before all of this all was well so it was something screwy with windows and/or my bios. Anyhow, up and running with Windows 7 64-bit now :)
 
Went back to the original problem again a few days later. After many painful weeks of investigation, it was determined that they (BT) had accidentally put a cap of 7-14MB on my line, which it can't handle. They have finally put a cap of 5-6MB and it's been stable for a while now.
 
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