Powers off during wake from sleep

Discussion in 'Mac Pro' started by 719c6, May 20, 2019.

  1. 719c6 macrumors newbie

    Joined:
    Apr 4, 2018
    Location:
    Missouri
    #1
    Mac Pro, 5,1 running Windows 7 recently started powering off after I try to wake from sleep.

    After going to sleep like normal, the power light fades in and out like normal. When I try to wake it, it shuts off completely. Have to power back up and Windows resumes. Tried resetting power settings but no effect.

    Any ideas?
     
  2. bjar macrumors regular

    Joined:
    Feb 20, 2013
    Location:
    Sugar land, tx
    #2
    Most likely a power supply issue. If you also have OS X installed, trying booting that and see if you have the same issue. Power supply is easy to replace, I got mine from dvwarehouse.com. Might be able to find one cheaper elsewhere.
     
  3. 719c6 thread starter macrumors newbie

    Joined:
    Apr 4, 2018
    Location:
    Missouri
    #3
    Booted into OS X and all worked fine. Back to Windows and same issue. I'm trying to uninstall some recent updates to see if that changes anything. Anyone else have any possible solutions?
    --- Post Merged, May 21, 2019 ---
    Just uninstalled three updates dated 05/15 and all seems well now. Don't know which one affected the sleep wake but we'll see.
     
  4. bjar macrumors regular

    Joined:
    Feb 20, 2013
    Location:
    Sugar land, tx
    #4
    That’s odd. Have you ever thought about putting windows 10 on it?
     
  5. 719c6 thread starter macrumors newbie

    Joined:
    Apr 4, 2018
    Location:
    Missouri
  6. Jayson A macrumors 68000

    Joined:
    Sep 16, 2014
    #6
    So okay, I had a very similar issue on my 5,1. It first started happening only in macOS, but then eventually in Windows too. It turned out to be the aging power supply. I bought another one and it solved the problem 100%. Still no issues to this day. Hope this helps.
     

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5 May 20, 2019