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Realtek Network Controller not found

Last response: in Motherboards
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April 19, 2013 10:50:33 PM

Alright, I built myself a computer, got everything working, I've installed windows 7, installed all the motherboard drivers, etc. So I tried connecting an ethernet cable to the back of the motherboard in the ethernet port, and connected the other end to the router. My computer did not detect anything. I've ran through some problems and have tried installing the ethernet driver again and again, and each time I do, I get the pop up "The RealTek Network Adapter/Controller was not found. If Deep Sleep Mode enabled Please Plug the Cable". Classic problem, I know. However, unlike most people who have this problem, I can't seem to find a solution. I went through this thread from another site and have tried almost every troubleshooting fix listed. But the problems just continue to grow, as under "Device Manager", I don't have a "network adapters" dropdown menu. And when I go into power management, there isn't an option to untick “Allow the computer to turn off this device to save power”, so I can't do anything about that. Suggestions from the comment section? In BIOS, there is no "Chipset Configuration" that I can find, and there isn't a "PCI Latency Timer" setting that I can change (suggestion from abhishek). And there isn't an NIC setting in the BIOS either (suggestion from sumanth). So now I'm really stumped. The only fix it method I haven't tried yet is removing the RAM for 10 minutes, although I strongly doubt that'll work. Anybody have any suggestions about what to do?
a b V Motherboard
April 20, 2013 3:14:16 AM

I had a cracked Win 7 Ult. CD and had all sorts of difficulties installing windows, until I examined the CD. So I downloaded a copy of Win 7 Ult. from MS and burnt the .iso file to disk and voila a nice clean install. Have you checked the Win 7 install disk?
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April 20, 2013 5:17:11 AM

chesteracorgi said:
I had a cracked Win 7 Ult. CD and had all sorts of difficulties installing windows, until I examined the CD. So I downloaded a copy of Win 7 Ult. from MS and burnt the .iso file to disk and voila a nice clean install. Have you checked the Win 7 install disk?
I took a look at the W7 disk, there are definitely no scratches or dirt on it.

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a b V Motherboard
April 20, 2013 5:24:33 AM

OK, but is the install a full MS version or one from an OEM. If you bought an OEM version they often come with presets that conflict with your build. If that is the case you may have issues with installing a Realtek driver if the native conflicting driver is installed.
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April 20, 2013 5:37:45 AM

chesteracorgi said:
OK, but is the install a full MS version or one from an OEM. If you bought an OEM version they often come with presets that conflict with your build. If that is the case you may have issues with installing a Realtek driver if the native conflicting driver is installed.
Yeah, I have one from an OEM. Bought W7 from Amazon. But then where would I find the native driver for the ethernet port so that I can remove and replace it?

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a b V Motherboard
April 20, 2013 6:54:07 PM

Thinking on this more I am not certain that you can remedy the situation by using Windows device manager, unless there is some unknown device shown in device manager.

My next guess would be in the BIOS where the device is not activated per sumanth. But most modern motherboards would have the default turned to on (rather than off).

I have to think that the problem may very well be with the onboard network controller. If that chip is bad then no matter what, you will have to RMA the mobo.

Try removing the memory, and also resetting the BIOS to the default first. If that doesn't work then you should get on to tech support for the mobo OEM and see if they will RMA the mobo.
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April 20, 2013 9:13:48 PM

chesteracorgi said:
Thinking on this more I am not certain that you can remedy the situation by using Windows device manager, unless there is some unknown device shown in device manager.

My next guess would be in the BIOS where the device is not activated per sumanth. But most modern motherboards would have the default turned to on (rather than off).

I have to think that the problem may very well be with the onboard network controller. If that chip is bad then no matter what, you will have to RMA the mobo.

Try removing the memory, and also resetting the BIOS to the default first. If that doesn't work then you should get on to tech support for the mobo OEM and see if they will RMA the mobo.
Nah, it's all good. I've done enough work on this computer to RMA it. Everything else is working out fine, so I just gave up and bought myself a wireless adapter. It's all good now.

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