Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Computer half-waking up and going back to sleep on its own

09 Oct 2015   #1

Windows 7 Professional 64 Bit
Computer half-waking up and going back to sleep on its own

I have a rather strange issue with a Windows 7 Desktop. This computer will partially wake itself up from sleep and go back to sleep. When it partially wakes up, the fans spin up, the case lights come on, hard drives spin up, and USB devices receive power for a brief period of time. The displays never come on. After about 2-5 minutes, the computer goes back into sleep. It does this about every 45-60 minutes.

If I move the mouse or hit the keyboard while the computer is in its half-awoken state, the computer doesn't do anything different. It doesn't fully power back up and it resumes putting itself back to sleep after a couple of minutes. Because of this, I can't use the "powercfg -lastwake" command to track what is bringing it up.

However, if the computer is fully asleep (nothing spinning or on), then I have to use the power button to turn it back on. The keyboard will not wake it up, even though the keyboard is shown as a registered device to bring the computer out of sleep (confirmed from powercfg command in command prompt).

I apologize if this is somewhat confusing, but I've been searching around for the past few days trying to find a resolution. I am confident it isn't malware related, as this computer is scanned with Malwarebytes and Security Essentials twice a week (nothing detected in quite some time).

Things I've tried:

Adjusting power settings to turn off hard disks and display after 20 minutes, put computer to sleep after 60 minutes
Disable the mouse from being able to wake the computer from sleep through elevated command prompt
Double checked that the network adapter is not able to wake the computer from sleep
Disabled magic packet wake for network adapter

Any thoughts? Suggestions?

Thank you ahead of time!

My System SpecsSystem Spec
09 Oct 2015   #2

Windows 7 Home Premium 64bit

This might be of no actual help, but my Windows 7 Home Premium, for about 7 days, woke from sleep just as your first paragraph, except my machine did that every 20 minutes or so. It started after I got it back from my small local computer shop that built it last March, it having developed several glitches (but I was able to use it). The glitches were more or less fixed. The waking up and going to sleep problem disappeared of its own accord.
My System SpecsSystem Spec
09 Oct 2015   #3

Multi-Boot W7_Pro_x64 W8.1_Pro_x64 W10_Pro_x64 +Linux_VMs +Chromium_VM

Is this a new/recent problem, and sleep worked ok before ?
If it's new problem, do you have a restore point or backup image from before this problem started ?
If you do, can you restore and fix the problem ?

If that doesn't help, work though this tutorial:
Power Options and Sleep Mode Problems

I have a wake-up problem if i don't get enough cups of hi-test coffee
My System SpecsSystem Spec

12 Oct 2015   #4

Windows 7 Professional 64 Bit

I tracked down the issue.... and it was purely on a fluke. There was a faulty Mini-USB cable attached to the back of the computer that was just hanging there not being used. I walked in Friday evening and the computer was making the USB Disconnect / USB Connect sound over and over in quick succession. When troubleshooting that, I found the cable just hanging there. After I pulled it, the connect/disconnecting stopped. Since then, the computer hasn't been coming out of sleep on its own.

Man.... 4 months of the computer doing this, only to be caused by a (faulty) rogue USB cable.

Oh well... Problem solved!
My System SpecsSystem Spec

 Computer half-waking up and going back to sleep on its own

Thread Tools

Similar help and support threads
Thread Forum
Computer keeps waking up from Sleep
I have my computer set to sleep after 3 minutes, But I notice it always wakes up on it's own accord. Shortly after going into sleep mode. I have disabled wake timers in advanced power settings, but doesn't stop it. Oh and the other thing, which might be related. When resuming from sleep, there...
General Discussion
Waking from Sleep understood but wont go back to sleep
I setup 2 Media center PC's and have them both goto sleep when not being used. They wake up in the middle of the night due to mcupdate_scheduled which I understand and know how to turn off. My problem is I want to leave it the option on and have the computers go back to sleep after the update is...
Media Center
Computer waking from sleep
I have my computer set to go to sleep after 30 minutes of inactivity which it does. However, after about 15 minutes of being asleep, it wakes itself up. Then, after 30 minutes of inactivity, it goes back to sleep. And so on and on. How do I find out what is causing the machine to wake up so...
General Discussion
Computer only wakes from Sleep half the time
This has been an ongoing issue with my computer only waking from sleep half the time. The other half I need to actually power cycle my machine in order for it to wake. I know when it is going to wake properly because I hear the DAC on my Asus Xonar Essence STX Sound Card click on and if it's not...
General Discussion
Computer won't return back to sleep after waking for recording
I am running Windows 7 Pro 64bit and am having an issue with the computer returning back to sleep. At the moment, I have hybrid-sleep enabled, and if I schedule a recording while the computer is powered down in the hybrid-sleep mode, it will wake itself to record the program. However, I'd like...
Media Center

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 20:40.
Twitter Facebook Google+