Realtek Network Controller Deep Sleep Mode: SOLVED

The Realtek Network Controller was not found. If Deep Sleep Mode is enabled Please Plug the Cable.

This just happened yesterday and we tried all the posted remedies. Pulling out the RAM chips for up to 10 minutes, unplugged the power supply to the motherboard, fiddled in the BIOS settings to disable/enable the on-board LAN, patted our heads and rubbing our belly. Nothing worked, same stupid error. (Sure, pulling out the RAM chips and such might work for some of you, but didn’t work for us)

Short of having to re-image the drive, we decided to strip out all the cards off the motherboard. Pulled off the USB card, video card, sound card, PCI Express card and the RAM chips. Cleared off the motherboard! (we left the power supply cables attached)

Put back in the RAM chips ONLY and booted it back up. Ok, the realtek network controller is now loading correctly. So we started adding back the cards to identify the culprit. (Which turned out to be The PCI-Express to PCI Adapter Card)

We were unable to reassign the IRQ for that device so we just left it out and VOILA! SOLVED.

Once you get it up and running again be sure to do the following:

Open Device Manager:
1. Go to Start
2. Click Control Panel
3. Choose System and Security
4. Click Device Manager (under System)
Open Network Controller properties:
1. Double-click Network adapters to expand it
2. Double-click the Realtek Network Controller
Turn off Deep Sleep mode:
1. Choose the Power Management tab
2. Untick “Allow the computer to turn off this device to save power”

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22 Responses to “Realtek Network Controller Deep Sleep Mode: SOLVED”

  1. bballguru80 Says:

    Has anyone encounter this issue on a tablet Samsung Slate 7 to be specific. Let me know if you have. Megatrends Bios V z02m. Thanks in advance.

  2. uwais Says:

    hi friend, i fix this problem go to your bios setting restart your pc go to 1,bios setting 2,go to advance 3,go to system configuration enter 4,go to built-in lan make it enabled that is all 200% work please coment on uwais0002@gmail.com

  3. Tomcat.88 Says:

    Hi,
    i have the same problems like you, but i find solution how to get LAN adaptor working.
    Nothing such like remove baterry, reset CMOS or reinstall windows did not work for me. But i tried to boot into windows safemode with active network. Then manually insert drivers ( with autodetection no success) = manually list hardware, select LAN adaptor and find driver. Instalation was ok, then adaptor appears in Lan components (not under unknown devices). Then under settings of adapter just disable powersavings and that´s all.

    Just try it and let know if is this solution working ;-)
    Tomcat

  4. Santosh Says:

    ……………………………………………………It’s Working……………………………………………………………………………………………

    When you start your laptop press F2 ….2 to 3 times …setting will open …go to adavanced…then go to NIC …Enable it …then install Your Ethernet drive….. problem will solve………………
    …………………………………………………………………………………..Santosh…………

  5. Gauri Says:

    Thanks. that worked. u r awesome… :)

  6. Kipson Says:

    he problem starts when the computer goes into sleep/standby mode, a few components of the PC including the network controller (or adapter) are turned off. The issue occurs when the PC wakes up and power to everything is restored. The network controller doesn’t come on and as per Realtek installation message:

    The RealTek Network Adapter/Controller was not found.
    If Deep Sleep Mode enabled Please Plug the Cable
    The best fix is to reset the motherboard and the best way to reset your motherboard is to remove your RAM chips. Leave them out for some time (in my case 30 seconds) and put them back in. And that is all! The motherboard will be reset and the network controller will come out of deep sleep mode!

    Note: If this doesn’t work, leave the RAM out for good 10 minutes. Leaving the RAM out longer has worked for some people (see comments below).

    Note 2: For laptops, removing the battery for 5-10 minutes has worked for a few.

    Note 3: If nothing works, turn off the system and plug in a external hard drive (or a USB thumb drive) and then turn the computer on. Once on the desktop, Windows will try to install the external hardware. This, in some cases, has worked and wakes up the network controller.

    Once you have it working, to make sure the network controller doesn’t go into sleep mode again, try this:

    Open Device Manager by:
    Go to Start
    Click Control Panel
    Choose System and Security
    Click Device Manager (under System)
    Open Network Controller properties by:
    Double-click Network adapters to expand it
    Double-click the Realtek Network Controller
    Turn off Deep Sleep mode by:
    Choose the Power Management tab
    Untick “Allow the computer to turn off this device to save power”
    Doing this will make sure the network controller is not put in to sleep mode till someone fixes the issue!

  7. Anshu Kesharwani Says:

    there is no network controller in device manager

  8. GiD Says:

    Poxa Estou com este problema consegui uma vez acorda-la mais agora aconteceu de novo o que faço ela não quer acordar mais.

  9. Ferdinand Says:

    i followed the steps above, i unchecked the box but still getting the same error message, although i upgraded my windows 7 laptop to windows 8 before the problem started

  10. David Smith Says:

    I had this problem with a Realtek on a Dell Vostro 3700. Tried most of the methods recommended from internet searches. The one that worked for me was very simple -in device manager right click on network adapters and select “scan for hardware changes” -this found it -then select update driver-install new driver from internet.

  11. Shaan Naik Says:

    Just remove the battery… wait for 2 minutes and replug it againg :)

  12. Wilmark Says:

    This is a very common problem with very varied solutions. I have been fighting with this problem on a Gigabyte MB without any sol to date having tried almost every solution found on the internet.

  13. Tim Says:

    Didn’t work for me. Been having this problem for quite a while. After sleep mode, it can take anywhere from 10 seconds to 3 hours for network adapter to start. Says that there is no wire plugged in, but cabling is fine.

  14. sandip Says:

    there is no network controller in device manager, when i checked network properties “Local Area network ” is missing , any idea ?

  15. russell rabe Says:

    i did it,,,i just get the memory ,chipset, and video card for 1 minute and i put it back,, and i on the pc ..the internet run perfectly….thnks guys,,,,yahhooooooooooo

  16. zetR1 Says:

    Install a new network card in an empty PCI-E slot and forgo Realtek.

  17. Mehdi Says:

    there is no network controller in device manager

  18. Double_A Says:

    I solved this problem like this:
    – Disable Intel SpeedStep (if any) in BIOS

    After I did that Windows just installed the driver when I booted the next time.


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