Macbook Retina 15" 820-3662-A EMC 2674

[mferna14]

I am working on Macbook Retina 15" 820-3662-A EMC 2674. It chimes everytime I turn it on but does not boot into any OS (EXTERNAL or Internal SSD). Once only I could boot up into the OS, put in the password & booted up to the desktop. After a complete shutdown, I turned it on again, chimed & then stuck on Apple logo again. First I did a PRAM reset, no luck. I check for any liquid spill on the logic board but very very clean, no trace of any liquid spill. Then I did a Clean ME region of the BIOS & re-programmed the BIOS again, but still get stuck on Apple logo. I am posting the Original BIOS Bin Files for someone to look into & check if this BIOS bin files are the problem or what could be the problem??? Kindly help

[piernov]

Re: Macbook Retina 15" 820-3662-A EMC 2674

Try to run ASD EFI and ASD OS.

[SMDFlea]

Re: Macbook Retina 15" 820-3662-A EMC 2674

Try this bios .

[mferna14]

Re: Macbook Retina 15" 820-3662-A EMC 2674

Thanks for all the help., you very imagine, it was the battery that was freezing up the OS in the start. Removed it, booted up fine. Put in a new battery & all works fine now.. Thanks

[MobileXT]

Re: Macbook Retina 15" 820-3662-A EMC 2674

Can someone Clean the ME Region on this EFI BIOS dump. Macbook Pro Stuck at Apple Logo.

[peste]

Re: Macbook Retina 15" 820-3662-A EMC 2674

Can someone Clean the ME Region on this EFI BIOS dump. Macbook Pro Stuck at Apple Logo.

try this..

[MobileXT]

Re: Macbook Retina 15" 820-3662-A EMC 2674

try this..

Thanks! it's working.

[master_clone]

Re: Macbook Retina 15" 820-3662-A EMC 2674

Can someone post a BIOS dump for 820-3662-A for a 2014 2.2Ghz IG model?