Macbook Air Boot process recovery very very slow and stops - GSM-Forum

toptac · 04-27-2019, 06:03

Sorry for my English, come from Germany.

I have a Macbook Air 13" 2014 Board 820-3437-B, no water damage or anything else.

It booted permanently in the loop with the startup sound.

I exchanged the EFI/SMC chip for a reprogrammed one. Now it takes about 1 minute until the start sounds chime comes and after about 1 minute the Apple logo appears with the bar. The bar will load for about 45 minutes until the end and then stops/froozen. Nothing happens anymore. I can't go into recovery mode.

Everything is fine on the logic board, no corroded areas or the like.

SMC reset, NVRam reset, I did everything. Apple diagnosis showed no errors.

I also disconnected everything from the logic board and tried to start it blank, so only display. Without keyboard and trackpad.

Can anyone help me?

bilel27 · 08-15-2019, 19:28

Quote:

Originally Posted by toptac

Sorry for my English, come from Germany.

I have a Macbook Air 13" 2014 Board 820-3437-B, no water damage or anything else.

It booted permanently in the loop with the startup sound.

I exchanged the EFI/SMC chip for a reprogrammed one. Now it takes about 1 minute until the start sounds chime comes and after about 1 minute the Apple logo appears with the bar. The bar will load for about 45 minutes until the end and then stops/froozen. Nothing happens anymore. I can't go into recovery mode.

Everything is fine on the logic board, no corroded areas or the like.

SMC reset, NVRam reset, I did everything. Apple diagnosis showed no errors.

I also disconnected everything from the logic board and tried to start it blank, so only display. Without keyboard and trackpad.

Can anyone help me?

pm me you need to clean me region in your macbook air

04-27-2019, 06:03	#1 (permalink)
toptac Junior Member Join Date: Feb 2013 Posts: 14 Member: 1881804 Status: Offline Thanks Meter: 1	Macbook Air Boot process recovery very very slow and stops Sorry for my English, come from Germany. I have a Macbook Air 13" 2014 Board 820-3437-B, no water damage or anything else. It booted permanently in the loop with the startup sound. I exchanged the EFI/SMC chip for a reprogrammed one. Now it takes about 1 minute until the start sounds chime comes and after about 1 minute the Apple logo appears with the bar. The bar will load for about 45 minutes until the end and then stops/froozen. Nothing happens anymore. I can't go into recovery mode. Everything is fine on the logic board, no corroded areas or the like. SMC reset, NVRam reset, I did everything. Apple diagnosis showed no errors. I also disconnected everything from the logic board and tried to start it blank, so only display. Without keyboard and trackpad. Can anyone help me?