MBP MacBook Pro powers down unexpectedly

Discussion in 'MacBook Pro' started by PierreDominus, Apr 3, 2018.

  1. PierreDominus macrumors newbie

    PierreDominus

    Joined:
    Apr 3, 2018
    #1
    Please, any experts out there at interpreting an error report?

    My MacBook Pro Mid 2015 High Sierra powers off unexpectedly even when power lead is connected.
    And sometimes only boots on second or third attempt.

    Error report is for when it powered off....
    Any ideas please how you would trouble shoot this and fix it?

    I have reset NVRAM and SMC

    Thanks.

    *** Panic Report ***
    panic(cpu 0 caller 0xffffff7f8209c58b): "DSB0: thunderbolt power on failed 0xffffffff\n"@/BuildRoot/Library/Caches/com.apple.xbs/Sources/IOPCIFamily/IOPCIFamily-320.30.2/IOPCIBridge.cpp:1296
    Backtrace (CPU 0), Frame : Return Address
     
  2. maflynn Moderator

    maflynn

    Staff Member

    Joined:
    May 3, 2009
    Location:
    Boston
    #2
    If its a repeatable issue, you may be dealing with a hardware failure.

    Did you try running Apple's Hardware Test? I'd also given Apple a call and make an appointment for them to check the laptop out.
     
  3. Samuelsan2001 macrumors 604

    Joined:
    Oct 24, 2013
    #3
    Do you have any thunderbolt attached peripherals?
     
  4. PierreDominus thread starter macrumors newbie

    PierreDominus

    Joined:
    Apr 3, 2018
    #4
    Hi All, Thanks for the help..
    No attached peripherals at all.
    Not heard of this hardware test bit googled it and ran it and it didn't show any problems...
    Hoping I can fix this without involving Apple as I'm out of warante...
     
  5. buran-energia macrumors regular

    Joined:
    Oct 9, 2017
    #5
    You can always try wiping out everything, doing a fresh OS install and making sure it's the latest version. If this is still happening with no third party software installed or hardware, then it's probably some sort of hardware issue.
     
  6. treekram macrumors 68000

    Joined:
    Nov 9, 2015
    Location:
    Honolulu HI
    #6

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