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

14 Sep 2013   #1

Windows 7 Home Premium 64bit
Realtek PCIe GBE Family Controller keeps disconnecting - my fix.

So I had this issue where my ethernet connection on my Lenovo B570 laptop keeps disconnecting about every couple of minutes and the link lights would turn off then it would reconnect. So I did the following:

visit Realtek and install the latest driver. (Might not be necessary but do it anyways)
open Network and Sharing Center, click on Manage adapter settings, right click Realtek PCIe GBE Family Controller (Local Area Connection) and select properties. Click on configure, switch to advanced tab and change the following properties:

Auto Disable Gigabit > Relink Battery or AC
Green Ethernet > Disable
Energy Efficient Ethernet > Disable

My ethernet connection has been stable so far.

Hope this helps anyone.

My System SpecsSystem Spec
15 Nov 2013   #2

Windows 7 Home Premium x64

Thank You Very Much! Your manual really helped me!
I was dancing with a tambourine for 3 nights, before i found Your message.
I Must add that 1 step was made by myself: link speed/duplex settings were changed from Auto to 10 Mb, Full Duplex. And only after that link lights began to work....
My System SpecsSystem Spec
21 Feb 2014   #3

Windows 7 Home Premium 64bit

Quick update: I switched Auto disable gigabit to disable and it works fine so now I have gigabit speed.
My System SpecsSystem Spec

11 May 2014   #4

Windows 7 Ultimate 64bit

I signed up on these forums just to thank you!
Thank you so much now i don't have to beat my face into the keyboard anymore!
My System SpecsSystem Spec
05 Nov 2014   #5

windows 7 Ultimate x64

Thank you very much for this information. It saved me thousands of frustrations!
My System SpecsSystem Spec
02 Aug 2015   #6

Windows 7 Professional 64 bit
Yes, it works!

Hey. I know that you posted this a long time ago but I was facing the same problem on my desktop and your information helped me to solve my problem.

My System SpecsSystem Spec
17 Aug 2015   #7

Windows 10 64bit x64

Abeyousef, you are the greatest! I just had the AT&T router and replaced and my Toshiba Laptop (using a newer Realtek PCle FE Family Controller) started dumping the Ethernet connection every 30 seconds to 2 minutes. Wash, Rinse, Repeat. I spent hours looking for a cure. After I found your post, I changed the Advanced Energy Efficiency setting to "disabled" and under the Power Mgt. tab unchecked "Allow computer to turn off..." and it's working fine again. I couldn't find the "Auto disable gigabit.." in any of the menus.
My System SpecsSystem Spec
24 Aug 2015   #8

Windows 10

Dude thank you very much!
I signed up just to thank you!
My System SpecsSystem Spec
12 Nov 2015   #9

Windows 7 x64

Thanks for the advise!
Just to add that in my case updating the drivers was essential.
My System SpecsSystem Spec
08 Feb 2016   #10

Win 7 64 bit

My System SpecsSystem Spec

 Realtek PCIe GBE Family Controller keeps disconnecting - my fix.

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