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PierreDominus

macrumors newbie
Original poster
Apr 3, 2018
2
0
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
 

maflynn

macrumors Haswell
May 3, 2009
73,682
43,740
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.
 

PierreDominus

macrumors newbie
Original poster
Apr 3, 2018
2
0
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...
 

buran-energia

macrumors 6502
Oct 9, 2017
298
115
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.
 
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