Windows 8 and 8.1 Forums


USB power on after shut down

  1. #1


    Posts : 4
    windows 8.1 x64 Professional

    USB power on after shut down


    after I install the Windows 8.1 (before was Win7) the usb keep power on after the shut down. in are off. In bios in the APM Configuration the EUP is disabled (like it was in Win7 when the usb was powerd off)
    any sugestions?
    my motherboard ASUS M4A87TD EVO

      My System SpecsSystem Spec

  2. #2


    Posts : 2,191
    Windows 8.1


    Just for a test, try disabling fast startup and boot a few time thereafter. Also, have you updated your bios lately?

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      My System SpecsSystem Spec

  3. #3


    Posts : 4
    windows 8.1 x64 Professional


    ok it works , my bios have the latest version displayed on the asus website
      My System SpecsSystem Spec

  4. #4


    Posts : 2,191
    Windows 8.1


    ok it works
    Having fast boot enabled may be creating a hybrid sleep state when you shut down. With is disabled, your bios may be reading it as a full shutdown. So, right now, I can only assume your shutdown is emulating a shutdown similar to Windows 7 and I really don't know how to tell you how to set your bios (eg, select which sleep state if you have that option) to keep both. Maybe someone else, familiar with your specific mobo, can help from here. Good luck.
      My System SpecsSystem Spec

  5. #5


    Posts : 3
    Windows 8.1


    I have the Asus Crosshair IV Formula. I had to set the EuP setting to enabled to turn off USB power in Windows 7. Now in Windows 8.1 the setting has no effect, it just stays powered on. Has anyone resolved this? I have a USB 3 external drive running inside my case and it doesn't want to turn off. The LED is flickering constantly through my case window! Microsoft what did you do?
      My System SpecsSystem Spec

USB power on after shut down
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