MBP MacBook Pro powers down unexpectedly

[PierreDominus]

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]

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.

 

[Samuelsan2001]

Do you have any thunderbolt attached peripherals?

 

[PierreDominus]

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]

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.

 

[treekram]

You might want to try a SMC reset. It worked for one poster in the Apple forums who was having this kernel panic.
https://support.apple.com/en-us/HT201295