Computer takes several hours to detect ethernet cable

GunnerWolf

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Apr 16, 2014
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A few months ago I bought a 20m ethernet cable for my desktop upstairs to connect to my router downstairs. I intended to start livestreaming regularly and wireless connection was simply far too unreliable.

When I first hooked it up, it didn't work. After some fiddling and messing around I assumed the cable was faulty.
However about a week later I realised it was working, and it ran from that point up until yesterday.
An issue I've had with the cable since it started working, is if my computer goes to sleep or shuts down, it loses connection, and takes anywhere from 1 to 12 hours to reconnect.

During this downtime, the networking window shows that "A connection is unplugged"
and ipconfig in cmd shows "media disconnected".
When my ethernet cuts out like this, I plug in my USB wireless adapter and use wireless internet.

After a while my ethernet connects again. I've not seen ethernet re-connect while I'm not connected via wireless, however I've never left wireless unplugged during ethernet downtime long enough to see if it makes a difference.

Another issue I've noticed is that sometimes my internet will show as connected, and skype and steam will be connected fine, however browsers, teamspeak and anything else that needs internet will be completely unable to connect, as if I wasn't connected at all. The only fix to this I've found is to restart my computer.

This particular issue occurs usually when my ethernet cuts out for whatever reason (Most likely my computer going to sleep) and I have to switch to wireless, however even once ethernet comes back on, if I have not restarted my computer to fix the problem, I will still be unable to connect.

I've checked my cable and it is not a crossover cable. Just a regular ethernet cable.

I've tried it in multiple ports on my router, and spent several days searching the internet for an answer, including making a similar post to this on another site, receiving no responses whatsoever.

My network drivers are up to date.

Specs:
OS: Win 7 64-bit
Network adapter: Realtek PCIe GBE Family Controller
Router: Virgin Media "Super Hub"

Any help would be greatly appreciated, these problems have been giving me a headache over the past few weeks.
 

clutchc

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The max length for cat5/cat6 Ethernet cable is about 90 meters. So the length should be fine... if you used a quality cable. Not all cat5 cat6 cables are created equal. But does the connection have that issue when connected with a shorter cable? You'd have to temporarily move the system close to the router to test.

You could try updating the Ethernet driver to the latest version.
 

GunnerWolf

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Apr 16, 2014
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Thanks for your response.

I can't test my computer with shorter/other ethernet cables for 3 hours, due to the room the router is in currently being occupied. However even if it were a problem with the cable, I cannot currently replace the cable or permanently move my desktop closer to the router.

Also, are ethernet drivers not the same as network drivers? Because if so, my network drivers are up to date, as I said.

What about the other problem I've been experiencing

Over the past 2 days my wireless has been constantly cutting out due to a crappy wireless connector, causing this issue to happen over 8 times today alone. Due to having to constantly restart my computer to fix this, my ethernet has been unable to sit for long enough to connect properly, and the only time it has connected at all over the past 2 days, which was earlier today, it suffered from this issue, so I had to restart my computer, once again severing the connection.


EDIT: I have tested it with 2 other ethernet cables. Both work fine on the vista computer already in the front room, but still cause the same issues on my PC.
 

clutchc

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Yes, the Ethernet is the LAN connection on the motherboard of most PCs. Can you try another PC or laptop on that long Ethernet cable? That would determine if it was the physical wiring or the Ethernet adapter in your PC that was the issue.

Also, you may want to try disabling or uninstalling the wireless adapter. At least for the test. Some systems will try to use whichever has the strongest connection/signal at the time. It could be causing the drop outs you experience during the switchover period.
 

GunnerWolf

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Apr 16, 2014
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I tried several ethernet cables, all worked on another PC, all did not work on this one.

Also, I always remove my wireless adapter when connecting via ethernet, otherwise my computer will use the wireless connection by default even if the ethernet is connected and stronger.

 

clutchc

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GunnerWolf

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Apr 16, 2014
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Yes, I'm assuming the problem is my ethernet adapter, which is the onboard one for my motherboard.
I have plenty of room to add a PCIe adapter, but it'll take a while to get one due to money issues right now.

As for my wireless adapter, I'm not sure on the model, but I believe it's the Buffalo WLI-UC-GNM AirStation N-Technology Wireless-N USB Adapter.
 

clutchc

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Is it a little USB thing like this? http://www.newegg.com/Product/Product.aspx?Item=N82E16833162037

You can try one with an extendable antenna until you get the Ethernet adapter. I have had good luck with this model. It has an 8' extension from its USB connector to its antenna so you can position it for strongest signal strength. http://www.newegg.com/Product/Product.aspx?Item=N82E16833704045

But really, most PCIe x1 adapter cards aren't all that expensive: http://www.newegg.com/Network-Interface-Cards/SubCategory/ID-27