locked
PC Won't Sleep, Constant HDD Activity RRS feed

  • Question

  • Yesterday, all of the sudden, my Windows 7 Professional 64-bit PC decides it no longer wants to fall asleep after 30 minutes of idle (my setting in Power Options). It'll sleep if I hit the power button (again, as per my Power Option settings) but it won't sleep on it's own.

    The hard drive activity light is flashing at a relatively regular interval, and the HDDs refuse to shut down unless I force sleep. I can't seem to find a process causing it, I haven't added anything recently at the hardware or software level.

    Any thoughts?
    Thursday, November 25, 2010 1:16 AM

Answers

  • Please first uninstall all unnecessary devices and see if the issue can be resolved. Also, test in Clean Boot. If the issue disappears in the Clean Boot environment, we can use a 50/50 approach to quickly narrow down which entry is causing the issue.

     

    Besides, please use Powercfg command to check this issue. To do that, refer to the steps below:

     

    1. Click the Start Button, type "cmd" (without quotation marks), right click on the "Cmd.exe" in the search result list and select "Run as administrator".

    2. Type "powercfg -devicequery wake_armed" (without quotation marks) in the open window and press Enter Key.

     

    3. A list of the configured devices to wake the computer will be received, then please type the following command to disable them one by one and see if the culprit can be found. (We may test the result after disabling each device.)

     

    Powercfg -devicedisablewake "devicename"

     

    Note: "devicename" is a device name listed as a result of running the first command.

     

    For example, if the network card "Broadcom NetXtreme Gigabit Ethernet" is listed, we can type the following command to disable it and press Enter.

     

    Powercfg -devicedisablewake "Broadcom NetXtreme Gigabit Ethernet"

     

    4. Please repeat the steps for other devices in the list.

    5. Reboot the computer and check this issue again.

     

    What's the result now?

     

    For more information, please refer to Powercfg Command-Line Options.

     

    If the issue still occurs, please type the following command and post the result for further research.

     

    1. Click the Start Button, type "cmd" (without quotation marks), right click on the "Cmd.exe" in the search result list and select "Run as administrator".

    2. Type "powercfg -lastwake" (without quotation marks) in the open window and press Enter Key.

     

    Also, please check Event Log: Go to Start -> type Event Viewer -> check the "Power-Troubleshooter" entries in "Windows Logs – System".

     

    Best Regards,

    Miya

     


    This posting is provided "AS IS" with no warranties, and confers no rights. | Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.
    • Marked as answer by Miya Yao Friday, December 3, 2010 7:42 AM
    Friday, November 26, 2010 2:34 AM