Hey all, this morning I turn on my Imac 21.5 inches late 2012 running on macOS Mojave 10.14.5, we hear the starting dong, but the screen is black and the fan is turning full?
I connected an external screen via the Thunderbolt port, I have a return image.
The Imac is extremely slow and the fan is running at its maximum.
By checking the activity monitor I noticed: Kernel_task du CPU à + de 350%
Did I run an SMC and NVRAM without a result? By pressing alt+D the hardware test starts a few seconds and then the screen displays :
Error : 0x8000000000000003, Cannot Load ' EFI.Drivers/Test Support.efi'
Status : 0x00000003
Thank you in advance for your help
I connected an external screen via the Thunderbolt port, I have a return image.
The Imac is extremely slow and the fan is running at its maximum.
By checking the activity monitor I noticed: Kernel_task du CPU à + de 350%
Did I run an SMC and NVRAM without a result? By pressing alt+D the hardware test starts a few seconds and then the screen displays :
Error : 0x8000000000000003, Cannot Load ' EFI.Drivers/Test Support.efi'
Status : 0x00000003
Thank you in advance for your help