Hi folks -
I'd be very grateful for any suggestions you may have to help my ailing MBP please!
Mid 2015 15 inch retina, 2.2GHz i7 and all tickety-boo until a few days after upgrading to Mojave 10.14.2, I suddenly get blocks of random colour and flickering on the display. I power down, re-boot and run virus checks just in case (I spent too long with Windows!) and no problems detected.
Now, whenever I boot up, two thirds of the way through the process the display flashes various forms of this image
and never gets to the log-in screen. Everything is absolutely fine if I boot in safe mode. I have tried resetting NVRAM and SMC and even inputting my password, but nothing works. The Apple Diagnostic says there are no issues found.
So I went to my local reseller, who said the logic board needs replacing. How can that be, if the diagnostic can't find a problem and safe mode is fine? Are there any home tests I can do to reassure myself the logic board does need replacing, before I shell out all that money?!
I'd be very grateful for any suggestions you may have to help my ailing MBP please!
Mid 2015 15 inch retina, 2.2GHz i7 and all tickety-boo until a few days after upgrading to Mojave 10.14.2, I suddenly get blocks of random colour and flickering on the display. I power down, re-boot and run virus checks just in case (I spent too long with Windows!) and no problems detected.
Now, whenever I boot up, two thirds of the way through the process the display flashes various forms of this image
and never gets to the log-in screen. Everything is absolutely fine if I boot in safe mode. I have tried resetting NVRAM and SMC and even inputting my password, but nothing works. The Apple Diagnostic says there are no issues found.
So I went to my local reseller, who said the logic board needs replacing. How can that be, if the diagnostic can't find a problem and safe mode is fine? Are there any home tests I can do to reassure myself the logic board does need replacing, before I shell out all that money?!