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Windows 7: Realtek PCIe GBE Family Controller keeps disconnecting - my fix.

28 Oct 2016   #11

Windows 10 Pro 64-bit Version 1607

I tried Abyousef's settings of
Auto Disable Gigabit > Relink Battery or AC
Green Ethernet > Disable
Energy Efficient Ethernet > Disable

I gained stable network connection but the "Auto Disable Gigabit > Relink Battery or AC" setting restricted my network speed to 100Mbps.

My final fix was to update to the latest Windows 10 drivers from the Realtek site. Realtek. This didn't help much until I installed a Cat 6 cable, this provides stable internet connection and consistent Gigabit network speeds.

It's funny, the Cat 6 cable I replaced from my computer to the router is less than a metre. I have a WD MyCloud mirror drive on a Cat 5 cable that is about 20 metres in length and it has no problems with Gigabit network speeds.

Hope this helps.

My System SpecsSystem Spec
22 Nov 2016   #12


Made an account just to thank you abeyousef. It worked perfectly and have been searching for a solution for a while now. This also works for windows 10.

My System SpecsSystem Spec
16 Oct 2018   #13

Windows 10 Pro x64
Thank you Abyousef!

I've been struggling with this issue for several months where my computer would not reconnect to internet after period of non-use. I have it set to turn off monitor but never sleep since I access it from other devices.

What appeared to ultimately resolve the issue was changing the Auto Disable Gigabit to Disabled.

Thank you, Abyouself!
My System SpecsSystem Spec

05 Feb 2019   #14

Windows 10 Home

Just thought I would put a note on here as well as this is the first result that comes up in Google for the search
"realtek energy efficient ethernet".

My config:
Windows 10
HP110-405a - uses Realtek PCIe FE Family Controller
Connected via Ethernet.

I was getting ethernet connect/reconnect problems - network icon on the taskbar changing between connection OK and connection failed and failed connection to Internet.

I found this fix out myself months ago actually but had to make the change again after the Windows feature update 1809.

Looking in the Events for the driver showed evidence of a reinstall which may have reset this setting? I guess a large windows update required a driver reinstall for some reason?

Anyway, as this post describes, just changing energy efficient ethernet to disable fixed the problem. Ethernet connection is now stable.

I didn't have to change any other settings.

Thanks Abyouself
My System SpecsSystem Spec
18 May 2019   #15

Windows 10

Thank you very much. This has also saved me from buying a new ethernet card.
My System SpecsSystem Spec

 Realtek PCIe GBE Family Controller keeps disconnecting - my fix.

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