I received a 2013 Macbook Air A1466 A1466 820-3437-B motherboard WITHOUT a bios chip. I got a new bios chip and reprogrammed it. Macbook now powers on but doesn't boot the SSD. I've flashed a ton of bios but still same problem. Windows installation works with this Macbook but never a mac installation. Unfortunately, since I didn't receive this macbook with a bios chip, I don't have the original bios. What can I do now?
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Post the laptop serial number https://www.badcaps.net/forum/troubl...before-posting -
The serial number is C02L6GQ9FSV8
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Hello everyone,
I’m currently working on a dead MSI GP75 Leopard (MS-17E71) motherboard (i7 CPU, NVIDIA GPU) with a no display/no backlight issue initially. After extensive investigation, I’m at a critical stage involving EC firmware, BIOS/ME region interaction, and possible deep corruption. I'm seeking advanced insight from anyone with experience in EC/BIOS sync issues or PCH-level behavior. Here’s a full breakdown:
🧩 Initial Issue- Board powers on (fans spin, keyboard lights up and can be adjusted, caps lock led lights), but no display or backlight
- External display (HDMI) shows
07-24-2025, 02:17 PM -
Hello everyone,
I am requesting urgent assistance to unbrick my laptop, a rebranded TongFang GK7MRFR chassis. The laptop is completely dead following a faulty in-OS EC flash attempt.
I have successfully used a CH341A programmer and can read/write/verify both flash chips, but using my backups/extractions has failed to restore power. The root cause is likely a corrupted Intel Management Engine (ME) region or an incompatible EC/BIOS pairing. System & Hardware Details- Barebone / Chassis: TongFang GK7MRFR
- MB: MB: GK5MP5X V1.0 Prod :GK5MRFV10T04201310281
- Rebrand: PC Specialist
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Sorry for the long story. I have a Dell Latitude 5530 (i7) laptop (South Peak 15 MLK MB DDR4 203102-1 FK8VG$JA) with an admin BIOS password that I want to remove. Service Tag: HYKFPT3. Other than that the laptop worked OK.
I found a CH341A Black and went looking for the BIOS chip on the motherboard. After trying to read one chip that was a firmware chip but not the BIOS I think I found the BIOS chip labeled Winbond 25Q256JVEN. Altogether I think I found 4 different firmware chips in the laptop. The BIOS chip is a WSON8 6x8. I used the CH341A, NeoProgrammer, and a cheap pogo pin clip... -
I HAVE A MACBOOK AIR A1466 820-00165-A THAT IS BIOS LOCKED I WAS ABLE TO DUMP THYE ORIGNAL TO UNLOCK IT AND ION THS PRFOCESS MY CAT GOT ON MY KEYBOARD AND WAS ABLKE TO ERASE THE CHIP ASND THE FILES I HAD SO IM STUMPED. I HAVE A COUPLE BIOS THAT IVE DOWNLOADED AND CHANGED THE SSN BUT WE
HEN I FLASH THEM TO CHIP AND TRY TO BOOT THE MACBOOK NO FAN DISPSPLAY. BUT IT STILL CHARGES AND IF I PUT MY USB VOLT METER SHOW 5V AT USB WHENJ I POWER IT ON. IM STUMPED.. -
I HAVE A MACBOOK AIR A1466 820-00165-A THAT IS BIOS LOCKED I WAS ABLE TO DUMP THYE ORIGNAL TO UNLOCK IT AND ION THS PRFOCESS MY CAT GOT ON MY KEYBOARD AND WAS ABLKE TO ERASE THE CHIP ASND THE FILES I HAD SO IM STUMPED. I HAVE A COUPLE BIOS THAT IVE DOWNLOADED AND CHANGED THE SSN BUT WE
HEN I FLASH THEM TO CHIP AND TRY TO BOOT THE MACBOOK NO FAN DISPSPLAY. BUT IT STILL CHARGES AND IF I PUT MY USB VOLT METER SHOW 5V AT USB WHENJ I POWER IT ON. IM STUMPED..
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