Mac stuck at loading bar and screen blink…

Mac stuck at loading bar and screen blinking

Hello so im facing a problem with my macbook pro mid 2014 . Today i turn it on its weird how i left ot at 70% yesterday and now i found it off while it should be in sleeping mode anyways it turned on but at the loading bar it was at 50% then its stuck and the screen starts going black then back to the loading screen this time with a charging icon and same thing again and again without it moving i tried resetting the pram i restarted it several times i unplugged the power and wait for some minutes but nothing i tried first aid and now it goes until 70% and the problem starts over i tried turning it with command S to know what causing it exactly and it gets stuck at a command iosmbuscontroller error - transaction reuse

Posted on Aug 4, 2019 6:05 AM

Posted on Aug 5, 2019 6:52 AM

Sad to say, it sounds like a hardware problem.

How to Run Apple Diagnostics on any Mac

In some cases, a hardware problem is so severe that you won’t be able to switch your Mac back on. Thankfully, if you can run an Apple Diagnostics or Hardware Test, Apple Support suggests this is a way you can restart your Mac, even if it refuses to switch back on through other means.

Whether you are running an Apple diagnostics (on newer hardware and OS X devices) or a Mac hardware test (on older devices), Apple recommends printing their support instructions on how to run these tests. Once you’ve got the instructions in front of you, Apple recommends going through the following process to diagnose a hardware problem:

For those with iMacs or any desktop-based device: Disconnect all external drives and hardware devices, except for the keyboard, mouse, display, and speakers.
Select Apple Menu > Restart.
Press and hold the D key when the Mac is restarting.
Apple Diagnostics will run automatically. When it is complete, it will present a list of the problems encountered.

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Mac stuck at loading bar and screen blinking

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