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Network Interface constantly switching on and off?

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by james.ash

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I just picked up a computer off ebay that has a K8NGM-V motherboard. It has an AMD64 processor onboard Nvidia Graphics and onboard Nvidia Nic (at least thats the drivers that came with it). I did a google search for "download K8NGM-V motherboard drivers" and all I got in the download was the (Nvidia)video driver and not the NIC driver. I can connect to the internet but the connection is constantly on off and is difficult to do anyting with.

I did a fresh install of WinXP-Pro (ED) and I have a constantly changing nick status. "A network cable is unplugged" balloons up from the task bar 2 seconds on, 2 seconds off. (nonstop)

If I open the connection properties window the Network Connection does the same thing 2 seconds connected, followed by 2 seconds of "network cable is unplugged"

Thinking the onboard NIC was bad I purchased a new LINKSYS ehterfast PCI NIC installed it an I can't get any network connection from it, at all.

The onboard NIC is at least consistent in that it works 2 out of every 4 seconds.

Anyone know how to cure this????? Pizza and 2 litres of Soda to 1st person (or robot) to solve this freekin nightmare for me...

3 replies

by parsifal09

Have you first tested your connection with known good hardware (i.e. another pc that you know doesn't have problems)? If you indeed have a good network connection, you are likely looking at a Winsock problem if not two bad NICs. If you can get to a decent connection search for WinSockFix, a free utility that clears and re-writes registry entries pertaining to networking.

My guess since you've already tried two NICs and a fresh OS load is that you may just have a bad connection.

by dsinziro

The same thing happened to me. The solution was simple. Just right click in the connection icon, open properties window, on General tab click on configure, and select the advanced tab. Depending on your network card, select Link speed, or something like this, and try different speed. Normally this is set to auto negotiation and there are situations when this is don?t work. In my situation, when I set this to 10 Mbps full duplex speed all become OK. Good luck!

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