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Linksys BEFSX41 and ASUS M4a77D motherboard

R

rumpeltumskin

Member
I bought a used Linksys BEFSX41 router for 15 bucks. It is wired and a newer model than what I had, which died. I can't get it to work with my main computer that has an ASUS M4a77D motherboard and on board ReakTek Lan.

When I plug a cable into my computer , a light comes on by my the Ethernet plug if it is connected to something active. It never lights up if I plug my computer into the router. Windows always says the cable is disconnected, no matter what port on the router I use. My other computer in the bedroom can use the router just fine, no problems what so ever. I tried using the cable from the working computer on the one that doesn't work and it still says disconnected. I can plug my cable modem directly into my main computer and get online no problem.

The only thing I can think of is that the ReakTek Ethernet is somehow incompatible with the Linksys, but I have searched the Internet and found no one with the same problem. I have tried updating the firmware on the router and my LAN drivers, no luck.

Anyone have any ideas? I am thinking I am going to have to shell out for a new Ethernet card and quit using the on board LAN connection.

Any ideas would be great, Thx
 
It's unusual to have compatibility issues but it's been known to happen. RealTek is basically bottom-tier hardware, so if it's going to happen anywhere it'll happen there.

With that said, before you replace any hardware try changing your NIC from auto-negotiation to a set speed like 100Mb Full Duplex. It may just be that auto-negotiation is failing, in which case manually setting the link speed would work just fine.
 
There are Millions of computer running RealTek NICs with No problem.

However there is No way even to guess what is going on on your computer unless you will learn how to first check the OS on the computer and whether it is configured correctly with the NIC.

In general.

Do you have any kind of 3rd party Network Manager installed, like Bonjour, Netmagic, and the likes?
Do you have any "Fancy" 3rd party security suits, or Firewall like the nVidia hybrid Firewall.
Are you using more than one Firewall (including Windows Native), AV, or other active security applications?
If you do use any of the above, try to get rid of them and see if it helps (Get Rid, means Get Rid, Not just Disable ).
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First scan the computer for Viruses and Malwares.
When you are sure that it is clean.
Check the Device Manager for valid Wire card entry.

http://www.ezlan.net/Win7/net_dm.jpg

If there is No valid entry, delete any Bogus Entry, and re-install the Wire card's Drivers.
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Try to install the latest drivers of the card from the support page of the manufacturer.

Download the drivers and unpack them to a folder of your choice.

In the Device manger, right click on the adapter.

Click on Update Drivers, and choose the Browse my computer for drivers,

Choose let me pick from a list, Click on Have a Disk and point to the folder with the Drivers.
-------------------------------------
Check the Network connections to make sure that you have a Local Area Connection Icon/Entry, and that the Properties of the Icon (right click on the Icon) are correctly configured with TCP/IPv4 protocol in the Network Connections Properties.

http://www.ezlan.net/Win7/net_connection_tcp.jpg

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Make sure that No Firewall is preventing/blocking the Wireless components to get to the Network.

Some 3rd party Software Firewalls/AV/Security suit,s keep blocking aspects of Local Traffic even it they are turned Off (disabled).

If possible configure the Firewall /Security suit correctly, otherwise totally uninstall it, and get rid of its residual processes to allow clean flow of local network traffic.

If the 3rd party software is uninstalled or disables, make sure that Windows native Firewall is On .

3rd party Network mangers like Bonjour, NetMagic, and others can block local traffic too.

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Log to the Router's menu from a working computer and make sure that the DHCP is On and it is configured to assign IPs that can cover the number of computer that are connected (few more will be even better).

Switch Off the computer and the Router, Reboot the Router, and the computer.

Right click on the Wire card Network Connection, choose Status, Details, and see if it got an IP and the rest of the settings.
On IP status.

TCP/IP and its variables typically look like this.

Right click on the Wire card Network Connection, choose Status, Details, and see if it got an IP and the rest of the settings.

Typical TCP/IP status looks like this.

http://www.ezlan.net/Win7/status-nic.jpg

Description is the card manufacturing data.

Physical address is the card's MAC number.

The xx should be a number from 0 to 255 (all xx same number).

yy should be from 0 to 255

zz should be from 0 to 255 (all zz the same number.

The lease date should be valid to the current time.

*Note 1. IP that starts with 169.xxx.xxx.xxx is not valid functional IP.

*Note 2. There might be an IPv6 entries too. However, they are not functional for Internet traffic or LAN. They are needed for Win 7 special HomeGroup configuration.


😎
 
LOL, I just said to hell with it and went and bought a new PCI ethernet card. WOW, I went to Bestbuy and they only sell USB wireless adapters now, not love for those who still string wires all over the place
 
well. I finally got the router to acknowledge that I have a nic attached to it but it will only show up if I go into the properties of the nic and set the speed down to 10 Mbps full duplex ( half duplex may work too) I can slowly use the internet now but it feels like dial up. If I switch the nic back up to 100 Mbps the router suddenly can't see it and Windows tells me the network cable is not plugged in.
 
rumpeltumskin said:
well. I finally got the router to acknowledge that I have a nic attached to it but it will only show up if I go into the properties of the nic and set the speed down to 10 Mbps full duplex ( half duplex may work too) I can slowly use the internet now but it feels like dial up. If I switch the nic back up to 100 Mbps the router suddenly can't see it and Windows tells me the network cable is not plugged in.
Click to expand...
Then ultimately you're going to have to replace the router or the NIC*; there's not a lot of options here. But at least it's working for the time being.🙂

* Note that most retail NICs are also RealTek
 
Yeah, I bought a new ethernet card and it still only shows up if I set the speed to 10 Mbps. Also my new Cat 6 cable doesnt seem to work. It feels like it is too loose in the socket of the router. Sigh, new modem for me, and I wasted money on that used one.
 
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