LAN port stopped working Win 7

TheFlidKid

About two months ago I got an electrician friend of mine to route 30 meters of ethernet cable up to my room and it was working fine up until now. The lan port on my motherboard won't detect the cable is plugged in when it is yet when I plug the cable into my laptop it detects it fine and I get similar speeds to what I used to get on my desktop.

I have installed the latest lan drivers from my motherboards manufacturer but to no avail as it still won't detect the cable.

MarkR

Assuming you're using the same cable, it's probably a faulty network card. They are cheap and easy to replace (assuming you have a place to install it). Are you sure there is nothing stuck in the socket of your desktop?

TheFlidKid

MarkR wrote: »

Assuming you're using the same cable, it's probably a faulty network card. They are cheap and easy to replace (assuming you have a place to install it). Are you sure there is nothing stuck in the socket of your desktop?

Yeah its the same cable, its the lan port on the actual motherboard though. I'll have a look at it now

TheFlidKid

There's nothing lodged in the port at all, the l.e.d on the lan port itself isnt lighting up at all but the computer still detects that there is a lan port there so it's pretty confusing

ED E

They fail. It happens. Get a PCI NIC like this or do a warranty return on your motherboard.

TheFlidKid

ED E wrote: »

They fail. It happens. Get a PCI NIC like this or do a warranty return on your motherboard.

Probably a stupid question but would I need a 64 bit nic card since my pc is 64 bit?

stevek93

TheFlidKid wrote: »

Probably a stupid question but would I need a 64 bit nic card since my pc is 64 bit?

No any NIC card should work fine.

TheFlidKid

stevek93 wrote: »

No any NIC card should work fine.

Thanks a million man

phill106

TheFlidKid wrote: »

There's nothing lodged in the port at all, the l.e.d on the lan port itself isnt lighting up at all but the computer still detects that there is a lan port there so it's pretty confusing

Did you try removing the card from device manager and seeing if i picked i up again?
Or to rule out a software issue, you could boot off something like ubuntu, see if the nic works there?

TheFlidKid

phill106 wrote: »

Did you try removing the card from device manager and seeing if i picked i up again?
Or to rule out a software issue, you could boot off something like ubuntu, see if the nic works there?

I did remove it from device manager but it didn't pick anything up again, so I don't think it's software

MarkR

As above, if it's in warranty, and you can bear to send it back, send it back. Failing that, buy a lan card (tp-link is a good cheap brand available widely) and install it. It's easily done, but if you are unsure in any way, ask!

http://www.buildeasypc.com/category/hardware/how-to-install-and-configure-a-network-card-in-windows-7.htm

I probably don't have to say it, but turn off the computer first and unplug it!

TheFlidKid

MarkR wrote: »

As above, if it's in warranty, and you can bear to send it back, send it back. Failing that, buy a lan card (tp-link is a good cheap brand available widely) and install it. It's easily done, but if you are unsure in any way, ask!

http://www.buildeasypc.com/category/hardware/how-to-install-and-configure-a-network-card-in-windows-7.htm

I probably don't have to say it, but turn off the computer first and unplug it!

Ah I know yeah I built it from scratch in February. I ordered a card because I can't be without the computer because of college and I like playing games!

cunnijo

Hi

Have you checked the system BIOS to see if it is detecting the onboard LAN. If it is then disable it and reboot into Windows. Go to device manager and see if it shows there. If it doesn't appear then the BIOS is OK and doing what it is supposed to do.

Go back into the BIOS and re-enable the onboard LAN. On boot up look at the back of the PC to see if the LAN light comes on with the cable connected. If it does then hopefully issue is resolved. If it does not then as suggested get a Gigabit network card or if under warranty return the PC for a replacement motherboard or if you built it yourself return the motherboard for replacement/repair.

TheFlidKid

cunnijo wrote: »

Hi

Have you checked the system BIOS to see if it is detecting the onboard LAN. If it is then disable it and reboot into Windows. Go to device manager and see if it shows there. If it doesn't appear then the BIOS is OK and doing what it is supposed to do.

Go back into the BIOS and re-enable the onboard LAN. On boot up look at the back of the PC to see if the LAN light comes on with the cable connected. If it does then hopefully issue is resolved. If it does not then as suggested get a Gigabit network card or if under warranty return the PC for a replacement motherboard or if you built it yourself return the motherboard for replacement/repair.

I checked that and still had no luck but the strangest thing happened today. I took my computer apart to give it a clean and then once I put it back together and turned it on the Lan port was working again.

Irish Steve

How much dust was there on the memory area? I've had a situation where dust in the machine caused it to do some strange things, and blowing it all out fixed the problem.


Have you got any other devices on the USB sockets? Some motherboards have an internal thermal fuse that can trip out if overloaded, and it only resets if the power is off for a while, which can disable some devices. Some PC's don't drop USB power as such when they are in standby, so the fuse may not have reset until you did a complete power down. Might not be the reason, but I've seen it happen.

In another direction, a long time ago now, we had an issue with a machine that kept losing it's USB ports, so it couldn't recognise the devices that were being plugged in, and we discovered, more by accident than design that there was a problem with the BIOS that meant it didn't load a driver correctly on start up, it checked memory, and if it saw the correct code in there, it didn't bother to reload it, and the memory was only cleared if the machine was powered down and the power lead was removed, and then the CMOS memory was cleared.

On restart, it forced the machine to load the correct drivers, and the USB worked again until the next time the memory got corrupted, which was usually caused by an anti virus update package.

Worth remembering this, if it happens again, try the same procedure.

TheFlidKid

Irish Steve wrote: »

How much dust was there on the memory area? I've had a situation where dust in the machine caused it to do some strange things, and blowing it all out fixed the problem.


Have you got any other devices on the USB sockets? Some motherboards have an internal thermal fuse that can trip out if overloaded, and it only resets if the power is off for a while, which can disable some devices. Some PC's don't drop USB power as such when they are in standby, so the fuse may not have reset until you did a complete power down. Might not be the reason, but I've seen it happen.

In another direction, a long time ago now, we had an issue with a machine that kept losing it's USB ports, so it couldn't recognise the devices that were being plugged in, and we discovered, more by accident than design that there was a problem with the BIOS that meant it didn't load a driver correctly on start up, it checked memory, and if it saw the correct code in there, it didn't bother to reload it, and the memory was only cleared if the machine was powered down and the power lead was removed, and then the CMOS memory was cleared.

On restart, it forced the machine to load the correct drivers, and the USB worked again until the next time the memory got corrupted, which was usually caused by an anti virus update package.

Worth remembering this, if it happens again, try the same procedure.

There wasn't that much to be honest. I was mainly re routing cables, want to get compressed air and do it properly. Thanks for the info man I'll keep that in mind in case something else happens