No network adapter/controller found on waking up from Sleep Mode
Oct 23
UPDATE: I’ve made a separate post for people interested in quick fix: Realtek’s network controller deep sleep mode issue
Yes, you read the title right. It is my second day of Windows 7 and trust me it was a long one. Its 1 o’clock in the morning and I finally got my internet working (after I got my Network Controller to work). So, lets start from the top.
Windows 7 does not like waking up from sleep
As it seems, Windows 7 really doesn’t like waking up from “Sleep” mode, most of the times for me, it just crashes. When I say crashes, it means I get a message on my monitor screen saying “No video input”, and the system is frozen because pressing the Num Lock key does not make the light of Num Lock go off.
No internet connection
I restarted the system (something I hate to do as it is my fresh install!) and was greeted by the screen asking me if I wanted to do a clean start up or try to restore the sleep mode again (as if it was my fault!). I had some work to do, so I jumped to the clean start up option and went straight onto Windows 7 desktop. So far so good. But then I noticed, Windows was screaming at me that I had “No internet connection”!
Network Controller/Adapter Gone
I went through several steps and came to conclusion that my network adapter had ‘died’, ‘gone to sleep’, ‘cuckooed’! It seemed that Windows 7 just could not see my Network Controller/Adapter, as if it has disappeared or vanished or just didn’t exist! There wasn’t even a section for Network Adapters in Device Manager.
Network Controller in Deep Sleep Mode
I tried to install the drivers for my Network Adapter (RealTek by the way) but I got a really nice error  message during the RealTek setup:
The RealTek Network Adapter/Controller was not found.
If Deep Sleep Mode enabled Please Plug the Cable
And that’s when I noticed something interesting, my network adapter wasn’t flashing. Just for curious minds, I own a SilverStone Raven (photo) in which the whole motherboard is turned 90° clockwise and the back-panel becomes the top-panel. This means, luckily, I could saw the problem.
Getting your Network Adapter/Controller Back
I instantly knew this isn’t a Windows 7 only issue. The first thing popped in my head I have to reset my motherboard. As I own a M4A79T Deluxe, resetting is as simple as sliding the RAM out and popping it back in (the normal way of resetting your motherboard by using BIOS/CMOS jumper).
And guess what, it did the job. I got my Network Controller/Adapter back!
Once I got my internet back, I tried to find out why does Windows 7 crash on trying to wake up from Sleep mode, I believe it has something to do with the S1 and S3 settings in the BIOS. I will investigate and report back here soon. But for people having trouble getting the Network Controller working, I hope this helps.
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Nov 04, 2009 @ 00:06:02
I have the very same motherboard and had the same problem with the network adapter disappearing with Windows 7. I tried re-setting the BIOS as you suggested but problem remained. I also upgraded the BIOS to latest from ASUS website but problem remains. I was certain your fix would work given the similarity of the problem. At this point I am guessing the network controller chip is defective. Any other thoughts?
Nov 04, 2009 @ 09:46:24
Did you reset the motherboard by removing the RAM chip (or did you use the jumper?). If you have the same motherboard as mine (M4A79T Deluxe), try the reset switch on the motherboard. One thing I forgot to put in the post was I pulled the power plug out as well. So, try this: Pull the plug out, after 30 seconds, pull the RAM chip out of its slot, wait 15 seconds, put it back in, put the power plug back in and try.. it works (even now) for me like a charm.
If the problem keeps repeating you should read the update post: Realtek’s network controller deep sleep mode issue
Nov 30, 2010 @ 21:42:34
I have the same problem, it isnt resetting the motherboard that fixes it, it is the hard reset (no power).
Still trying to work on fixing it, it potentially is a problem with realtek drivers.
Nov 30, 2010 @ 22:37:34
I’ve updated this post here with multiple methods to fix this: http://adeelejaz.com/blog/realteks-network-controller-deep-sleep-mode-issue/
Also look in the comments as people have found other ways to fix this.
Jan 18, 2011 @ 17:34:06
Well i am facing same problem but i have gigabyte 945 board , i tried to do it by removing ram and powercord too, now what can i do ?
Feb 04, 2011 @ 18:25:05
OK,
I’ve got it (Deep Sleep Mode sh..t) when I uninstall Kaspersky 2011 (official copy).
I have Windows XP (should it matter?), Gigabyte P55-UD3R,
LAN Chipset (Realtek 8111D) is OnBoard.
Interesting thing, ‘though. On other partition I have Windows 7 installed and it works!
I tried that RAM trick – didn’t work.
BTW, RAM trick returns controller only! It does not help with driver installation.
Tried to install Windows on top of the existing – nope.
Some in the comments say that even fresh installation on the formatted hard drive didn’t help!?
Downloaded new BIOS, just wonder if this will help?
So, what is this deep sleep mode?
I mean, looks like it is registry thing, isn’t it?
Apr 30, 2011 @ 04:31:59
we have taken the new dell desktop… am unable to install lan drivers… if i check in device manager, there in network option… kindly give me the solution for this…
Apr 30, 2011 @ 11:28:43
If you can see the network controller in device manager (and its a new desktop), then I’d suggest taking it back and letting them fix it.
May 02, 2011 @ 07:01:43
I am super unexperienced when it comes to computers and do not want to take out my RAM (mainly because I don’t know where it is). Is there another way I can do this?
May 02, 2011 @ 13:10:02
Well there might be (You can go into the BIOS and check whether you have an option to turn LAN on or off). But I’d recommend taking it to someone who knows about computers
May 18, 2011 @ 15:12:36
brother my system wake up from sleep mode, but now could not able to find the lan network. help plz
May 18, 2011 @ 18:03:06
If you know computers well, I’d suggest start by removing the RAM for five minutes and putting it back in. It usually fixes the issue.
Jul 18, 2011 @ 16:09:27
Here’s my solution. Go to “device manager” find that device under “network adapters” (or if you uninstalled the driver it should be under “Other devices”, named “Ethernet controller” or something like that- i forgot). Click on it(right click) and the click “uninstall”(the device will disappear ) , after that click on any other device and click “scan for hardware changes”(it should be back now, under “other devices”, named “Ethernet controller” or something like that). Now right click on that device (“Ethernet controller”) and click “update driver software…”, after that click “browse my computer for driver software”, than “Let me pick from a list of device drivers on my computer”(choose all devices just in case), when the list appears after few seconds(may be longer), find Realtek under “Manufacturer” and choose CORRECT!!! driver(if you don’t know the model of your LAN adapter, just go to the manufacturer’s site and check, I checked on newegg for mine—–mine was “Realtek 8111B(PCI-E)”(just so there is no confusion because of this PCI-E, mine is on-board) so I chose Realtek RTL8168B/8111B Familiy PCI-E….”-actually there were 2 of them , and obviously I chose the newer one), than click next and it will give you some warning how “driver is not recommended…”, of course disregard that and click yes. And I think that should be it (I forgot because I did it a few days ago- and if it’s not, the process should be pretty straightforward, so…), I think that after that you should get message how your driver(device) was installed, click OK or close (I don’t remember which is it). Go to “device manager” and now you should be able to see your Ethernet adapter under “Network adapters” and the name should be the same as the driver you chose (in my case: Realtek RTL8168B/8111B Familiy PCI-E….). If you see it there, after that just restart your computer and it should be working now.
If you had a Lan shortcut on your desktop delete it because chances are that it will not work- just put a new one
I hope this will help some of you
Aug 05, 2011 @ 04:14:34
Great Article.
I found it after being tied up with HP support for HOURS.
I found that All I had to do was plug an Ethernet cable into my laptop, and reboot and there was my adapter. But there again if I rebooted without the cable. No more adapter.
I changed the power settings on the adapter device manager > network adapters > Lan Nic (right click) propertied > power management tab.
Don’t go taking apart your new computer do fast.
Best,
Blake
Oct 23, 2011 @ 17:32:50
mine worked. always try to plug the cable into the ethernet port rather than using the wireless. just remove the RAM and the battery for 5-10 mins and fix them back. fix the cable and sure it would work…. thanks dude. you made my day…
Dec 23, 2011 @ 14:54:52
thanks guys. I had the same problem and this helped me fix it.
thanks again
Mar 28, 2012 @ 03:20:01
Hi, Adeel Ejaz i have a Gigabyte Z68X-UD3H-B3 i remove the ram remove my gpu remove the board battery i follow al the steps but i don have any networks adapters, can you help me?