Can loose connections cause a MacBook Pro to display blue/pink/white

@hellomacos - Did you review the crash report? If we look at the top of the stack we see the PCH driver then the PCI driver then the AMD driver (AMD7000Controller). In this case the last one in the pile is the failed process, the cascade goes up. This is a bad board or a failed repair of the logic board.

[code]dependency: com.apple.iokit.IOACPIFamily(1.4)[7E3AF027-B58C-341E-9B78-349E8ACBBCAC]@0xffffff801658d000->0xffffff801658efff[/code]

[code]dependency: com.apple.iokit.IOPCIFamily(2.9)[F4541C1C-CF87-39BB-B39E-FFF1E15F61CE]@0xffffff8016a36000->0xffffff8016a62fff[/code]

[code]Kernel Extensions in backtrace:[/code]

[code]com.apple.kext. AMD7000Controller (4.0.8)[CABAA989-435A-3987-A460-0D5EAC768D47]@0xffffff7f94a5a000->0xffffff7f94aa9fff[/code]

[code]dependency: com.apple.AppleGraphicsDeviceControl(6.5.7)[C8152975-5FE8-39BA-B5B9-8AFE4C732C02]@0xffffff7fab728000->0xffffff7fab72bfff[/code]

@danj

That’s quite interesting!

I didn’t catch the bit about the AMD GPU amongst all the other code

Thanks for letting know about that:-)

@danj Thanks this is super helpful! I was worried if I take it back to the store, they wouldn't be able to reproduce it (as they've been adamant that's it all been tested and the problem occurs very intermittently and is hard to reproduce). But knowing this will help a lot. Out of interest, would the logic board affect the thunderbolt ports? I find on of the thunderbolt ports works perfectly. But the other one does not work. I cannot get an ethernet connection or VGA connection from it. DVI does work, but the picture is green and fuzzy. The store said it has all been tested and it has passed their diagonsitcs, so I am again at a loss. Thanks in advance and thanks for your help so far.

@big_smile - The logic board carry’s all of the logic so different boards can encounter different issues so you can’t link them as having the same failure.

But! The root issue maybe an AC power issue! I would get an outlet tester to make sure the outlets your gear is plugged into are properly wired and grounded. Don’t forget your Ethernet gear and the internet router.

Also check your breaker panels ground connection you should have a bare, green or yellow wire connecting to one or more grounding rods or to a copper water pipe leading out. Double check the connections are good not green with corrosion.

@danj thanks I’ll give that a try. Although I get the issue with the blue/pink/white screens even when the Mac Book Pro is not connected to AC (and just running on battery) so would that rule the Ac out? Thanks again for all your help. I do appreciate it.