was working fine till I unplugged it yesterday to clean the inside... now when I turn on my PC the network is reported with a red X as no network, no connections... so I reboot once, maybe twice and it fines it and there? Anyone have any idea what might be going on here? I do think that when I plugged in the PC again, and booted up for the first time, it forced me into the bios but I just exited without saving.

thx... again.

Hi, First thing I would check is the cable to make sure it is Connected and maybe it is loose??

Is this the LAN Card that is built into the Mobo??

checked... and yes, on the motherboard... but it was working fine for over 2 weeks before I un-plugged it.

well goto BIOS and make sure the LAN card is enabled..Also try a different cable..

ya, i think something happened with the bios because when i first turned it on it sent me to the bios i just exited without saving. but weird that it still finds it after a reboot or 2.

thx

either windows is disabling the LAN Port, or the Bios is, check Power saving features, in Windows and Bios.


as I've had several friends with laptops, if the network isnt in use for the first few minutes, power saver shuts off the lan port.

I'd Boot Directly to UBuntuu DVD and see if that works, which would help in pointing to a Windows 7 problem, check the WIn7 Event Viewer for Red/yellow Hardware and DCOM events

Check the back of he pc where it plugs in. Any lights going showing activity?
Are you sure you're not connected to the router at all, or that it's denying you internet access?
Could be and IP address duplicated.

Go to progreams, accessorties, system tools (IIRC) and find the command prompt. Right click and run as admin.
Type
IPCONFIG write down your assigned IP address and the gateway, which should be the router's IP
IPCONFIG /release
IPCONFIG / renew
You should have a new IP address now

PING (the Gateway address) ex: 192.168.100.1
PING 192.168.100.1

It may be set up to reject these, but if you do see it, you know you're communicating with the router. If you still can't get online, and the IP address IS different than before, then the router's blocking you for some reason. Maybe a MAC address list for approval?

Happened to me not so long ago...

All good tips above.

Since you get a red X and not a yellow triangle, it is safe to assume there is no connectivity at all in the adapter, so I would not do the network diagnostics yet.

Follow sequentially:

- Check router end and PC end of cable (you said this is done).

- Plug a laptop if available to the same cable and check connectivity.

- Go to the BIOS and make sure the internal ethernet adapter is enabled. (looks like you tried this too).

- In Windows, right click on "computer" in the start menu and click "Manage". Check that the Network adapter is recognized in the "Device Manager" tab.

If not at all, then

- Try booting with an UBUNTU startup CD. You can build a startup CD with the installer here: http://www.ubuntu.com/download/ubuntu/download.

- If the network adapter is still not recognized by UBUNTU, the adapter is dead. Apply for warranty.

If there is an error symbol on the device manager icon for the card instead, then

- Right click on the network card entry and select "Uninstall" and remove drivers if offered to. Shutdown PC.

- Restart and re-install your network card adapters. If error persist, that would indicate a hardware conflict. Start diagnosis for conflicting hardware.

In my case the internal adapter was dead, so I had the notherboard RMA'd with ASUS.

Many things can cause this. For example If you cross the pin connectors accidentally when plugging back the cable, the electrical charge from the router line can fry the integrated chip.

thx will do.