Stuck on Apple Logo without progress bar

[davidmoakes]

Thanks for your reply, I have done as suggested and got a lot further than before.

I have uploaded a number of photos to show what was on the screen.

 

[P1LGRIM]

I have uploaded a number of photos to show what was on the screen.

Serial ports (SuperIO) should be disabled in BIOS settings.

 

[cmn699]

Thanks for your reply, I have done as suggested and got a lot further than before.

I have uploaded a number of photos to show what was on the screen.

Thanks for your reply, I have done as suggested and got a lot further than before.

I have uploaded a number of photos to show what was on the screen.

• The first image (Left Most ) looked 'scary' as it is usually seen before USB port failure.
  • I have uploaded it after editing*
• The subsequent images show normal progression of booting
• The last image shows Graphics are to be loaded.
• I would wait at this stage to see what happens.

****Check USB controllers in BIOS and change USB port of the Installer as a trial if the booting stops with Prohibited Entry Error

 

[davidmoakes]

Thanks for the advice. One thing I have noticed that keeps appearing is “Please switch to XPC or bootstrap_check_in” but is that relevant?

Similar result otherwise

 

[davidmoakes]

Just noticed that for some reason SuperIO seemed to turn to enabled overnight, so am trying again and will update

 

[davidmoakes]

Here’s my latest with all suggestions, after the last photo, it reboots into CLOVER

 

[Feartech]

Here’s my latest with all suggestions, after the last photo, it reboots into CLOVER

you should try taking pictures of the bottom of the screen as well

 

[davidmoakes]

That’s the entire screen in the pictures, although it doesn’t look like it.

 

[davidmoakes]

Having fiddled with it, I don’t seem to have got any further, any suggestions based on the photos I’ve uploaded would be appreciated.

 

[cmn699]

Having fiddled with it, I don’t seem to have got any further, any suggestions based on the photos I’ve uploaded would be appreciated.

• Have you already changed BIOS Serial Port as recommended by P1LGRIM?
  • If not, please do that : see attached composite image showing steps in your BIOS Peripherals
• Reboot in Verbose and upload problem screen shots.