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  1.    28 May 2017 #21
    Join Date : Jul 2015
    Posts : 72
    Window 10 Home 64bit

    If you disconnect all hard drives, and powered up the computer, wait for the no boot device error, then press & hold the power button, does the power supply shut down ?

    Alternatively if you have other bootable media, and you boot from that, are you able to power down ?

    Might be helpful to isolate MB, processor, power supply apart from Windows.
      My ComputerSystem Spec
  2.    28 May 2017 #22
    Join Date : Jul 2015
    Posts : 72
    Window 10 Home 64bit

    I had to disable in BIOS, the onboard Broadcom Netlink Gigabit ethernet NIC.
    Doing that returned normal Power supply operation. Sleep, Shutdown, Hibernation, now normal.
    The pc, being wireless, did not have me suspecting the onboard NIC & W10 CU compatibility problems.

    Find some weird things in computers.
      My ComputerSystem Spec
  3.    29 May 2017 #23
    Join Date : May 2017
    Posts : 12
    Windows 10 Home x64
    Thread Starter

    update: I did several new things in trying to locate the problem


    • successfully flashed the BIOS from 2.0 to 1.3
    • left the BIOS settings mostly at defaults
    • RAM left at default 2133mhz, for now, not running the XMP profile (3000mhz)
    • unplugged USB printer from motherboard


    So far, since flashing the BIOS to 1.3, i haven't had any failures (2 shutdowns, 2 sleep, all successful). Though I've learned this doesn't mean much - i've had strings of successes before, only for it to fail again. But it's a start.

    If after 3 or 4 days of no failures, I'll do things one at a time, like plug in the printer, enable the RAM's XMP profile, etc. and see if I start getting failures or hopefully not, and I can attribute the success to the 1.3 bios.
      My ComputerSystem Spec
  4.    02 Jun 2017 #24
    Join Date : May 2017
    Posts : 12
    Windows 10 Home x64
    Thread Starter

    Since rolling back to the 1.30 BIOS, i haven't had any more issues. 5 days and something like 20 or 22 consecutive shutdown/sleep with no failures.

    Considering this one resolved. Thanks to all for the help.
    @me75006: for good measure I disabled the secondary ethernet NIC in the BIOS also, thanks for the tip.
      My ComputerSystem Spec
  5.    02 Jun 2017 #25
    Join Date : Oct 2013
    Posts : 25,288
    64-bit Windows 10 Pro build 17046

    Great news. You might report that issue to your motherboard manufacturer to see if it may help them to fix the issue in a future BIOS version release.
      My ComputersSystem Spec

 
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