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Thread: Computer restarting on its own after shutdown




  1. #11
    genegold is offline Member
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    Default Re: Computer restarting on its own after shutdown

    LZP-550. Thanks for spotting the typo! Welcome to www.Kingwin.com: Power Supplies - Lazer Platinum Series 550w.

    I used the PSU calculator before buying the Kingwin and then again a few months ago when I added an outboard audio system. The estimated max is 430w, and I was very conservative, including aging and adding devices. The Kingwin LZP-550 is an "80 Plus" and the Tweek Town reviewer found it tested a full 550W. He also said, "The LZP-550 is essentially a 650W Gold rated power supply that performs at Platinum efficiency when rated for 550W."

    I just disconnected the cable modem before shutting down but the restart continued, so we can probably rule out the network module. One thing I didn't mention is that when the restart occurs, I immediately hold in the start button for several seconds and that kills it.
    Last edited by genegold; 02-11-2014 at 01:18 PM.
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  2. #12
    genegold is offline Member
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    Default Re: Computer restarting on its own after shutdown

    I posted this over on anandtech and got what seems to be the solution:

    "One more thing you might try re the registry:

    Location: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon

    Double Click on "PowerdownAfterShutdown"

    Then,
    Change it to "0" if it is "1" OR
    Change it to "1" if it is "0".

    And hit Enter."
    Computer reboots a few seconds after shutdown - AnandTech Forums
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  3. #13
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    Default Re: Computer restarting on its own after shutdown

    Interesting, and thanks.

    You install any software or util recently that may have changed that? Backup sw maybe?
    #1 - Please, when seeking help, enter the make and model of ALL parts that your system is comprised of in your Signature, or at least the model #'s in your System Specs, then "Save' it.
    ____If you are overclocking, underclocking, or undervolting any parts, informing us of this and their values would prove beneficial in helping you.

    #2 - G.Skill RAM Configurator for your boardSamsung Memory for your boardLatest AMD Chipset Drivers/WindowsLatest AMD Graphics Drivers/WindowsLatest Intel Drivers

    #3 - Please use the eXtreme Outer Vision Power Supply Calculator found HERE to determine if it might be your PSU at issue.
    ____Consider your PSU to be the foundation from which all else is built upon. Anything built upon a weak foundation is poorly built.

  4. #14
    genegold is offline Member
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    Default Re: Computer restarting on its own after shutdown

    No. I used Windows backup and SyncBack Pro under Win 8, but only the latter under 8.1. I do have occasional freezes, apparently related to audio programs in conflict with each other and/or Windows 8 (started with a new dac and its driver last June). I assume the problem occurred because of one of those freezes, but don't really know. Upon rebooting, I immediately run Yamicsoft Windows 8 Mgr's repair module, which buys me a week or two until the next. If anything was wrong, that repair should have fixed it, but since it didn't maybe there was another cause.
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  5. #15
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    boondocks is offline Senior Member
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    Default Re: Computer restarting on its own after shutdown

    From what I read at Anandtech, you have other problems so it's hard to say definitively what causes what....I would think that value would be set in the registry normally to "power off", but maybe it's a Windows 8 thing.

    Anyway glad you have some of it figured out!
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  6. #16
    genegold is offline Member
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    Default Re: Computer restarting on its own after shutdown

    Yeah, after posting here based on four straight clean shutdowns with the value set at 1, there were two straight restarts. So I set it back to 0, had a good shutdown for the night, but this morning it there was a restart. Hmm...

    Update: This seems to have been a common problem in Win 7. There's a good exchange of different causes and ways people solved it at https://login.live.com:443/login.srf...ft%24microsoft
    Last edited by genegold; 02-17-2014 at 12:17 AM.
    ASRock Z97 Extreme6 / Intel i7-4790K
    32 GB G.Skill DDR3 2133 RAM (Ares 4x8gb)
    EVGA GTX950 SC
    Prolimatech Megahalems Rev. C cooler w/ Nexus Silent Fan
    Seasonic X650 PSU
    Samsung Pro 850 256GB SSD (system drive)
    SanDisk ExtremePro 480, Seagate 1TB, 2TB and 2x 3TB SATA 6Gb/s
    Plextor PX-891SA CD/DVD Writer/Player
    Dell U2412M Monitor (1920x1200)
    IBM Model M keyboard / Bornd M120 wireless mouse
    Thermaltake F31 Case
    Canon MP640 / Brother HL-2270DW printers
    Audio system: Dac + Powered speakers + USB card + LPS + power cond./distrib.
    Windows 10 Pro x64

  7. #17
    genegold is offline Member
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    Default Re: Computer restarting on its own after shutdown

    Turned out I did find the immediate cause: Unplugging the dac's USB power cable from the add-on USB card and putting into an external four-plex, still computer powered but from one of the mobo's ports, ended the restarts. The cause could be anywhere between the dac's battery unit, the add-on card or the PSU. All three will be repaired or replaced very soon.
    ASRock Z97 Extreme6 / Intel i7-4790K
    32 GB G.Skill DDR3 2133 RAM (Ares 4x8gb)
    EVGA GTX950 SC
    Prolimatech Megahalems Rev. C cooler w/ Nexus Silent Fan
    Seasonic X650 PSU
    Samsung Pro 850 256GB SSD (system drive)
    SanDisk ExtremePro 480, Seagate 1TB, 2TB and 2x 3TB SATA 6Gb/s
    Plextor PX-891SA CD/DVD Writer/Player
    Dell U2412M Monitor (1920x1200)
    IBM Model M keyboard / Bornd M120 wireless mouse
    Thermaltake F31 Case
    Canon MP640 / Brother HL-2270DW printers
    Audio system: Dac + Powered speakers + USB card + LPS + power cond./distrib.
    Windows 10 Pro x64

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