Apple Apple iMac 27" Late 2013 (820-3481-A)

Apple iMac 27" Late 2013 (820-3481-A)
820-3481-A.brd
j17_mlb.pdf
820-3481-A.brd

 

[Jitendrakashyap]

efi bios password remove

 

[ThienBui]

efi bios password remove

 

[aqeel192]

820-3481-A Need schematic and boardview

 

[ThienBui]

820-3481-A Need schematic and boardview

Unavailable

 

[Babatunde E Olugbemi]

Rebuild this bios dump for imac A1419,motherboard number:820-3481-a,NOT LOADING OS

 

[ThienBui]

Rebuild this bios dump for imac A1419,motherboard number:820-3481-a,NOT LOADING OS

 

[gupta vikas]

no display this plz repair

 

[ThienBui]

no display this plz repair

 

[harmat mali]

imac 820-3481-a stuck on apple logo plz repair this bios

 

[ThienBui]

imac 820-3481-a stuck on apple logo plz repair this bios

maybe the problem is not the BIOS

 

[gmmartin]

Hi, please clear me bios, iMac is very very slow. Thanks

 

[ThienBui]

Hi, please clear me bios, iMac is very very slow. Thanks

 

[gmmartin]

Hi, not working. Only two leds on, third led remains off; no chime, no boot. Attached uncompressed Bin file.
Please clear me bios, system very slow. Thanks.

 

[ThienBui]

Hi, not working. Only two leds on, third led remains off; no chime, no boot. Attached uncompressed Bin file.
Please clear me bios, system very slow. Thanks.

I only help clear me
doesn't work you need to try another BIOS don't resend the old BIOS

 

[gmmartin]

Hi, the original Bios works without problems; only is very slow. The bios that you clear me intel me region does not start. Could you please check if there is a problem? I sent the "bios dump" without compressing because if there is any failure in compression or decompression. Thank you very much; regards.

 

[ThienBui]

Hi, the original Bios works without problems; only is very slow. The bios that you clear me intel me region does not start. Could you please check if there is a problem? I sent the "bios dump" without compressing because if there is any failure in compression or decompression. Thank you very much; regards.

clear me only fix late display not fix run slow
run slow you need check hardware

 

[gmmartin]

I do not understand.
Please help me; I know the original bios (attached file) works correctly, only the iMac is slow, so the same bios with the cleared me region should at least make the equipment work the same, right? Or not? I m confused.

 

[giacomo1428]

clean me
please

 

[ThienBui]

clean me
please

 

[LAKSHMAN]

820-3481-a, board view and schematic please