Huawei NbDE-WDH9 (Board: DA0H99TB8E0 REV E HF)

[s.izadbakhsh]

Hello everyone,

I need a working BIOS dump for a Huawei laptop. The device powers on but has no display.

Symptoms: The laptop turns on, and the keyboard is responsive (I can toggle the Caps Lock/backlight lights on and off), but there is absolutely no image on the screen. It looks like a corrupted BIOS issue.

Device Details:

• Model: Huawei NbDE-WDH9
• Board Model: H98D DAH98DMB8B0 REV B HF
• BIOS Chip: MX25L25673G @ WSON8 (8x6)
• CMIIT ID: 2020AP10393
• Serial Number (S/N): NQNPM23404000234

I have already desoldered the chip and backed up the original corrupted dump.

Thank you!

[SMDFlea]

Thanks for the file.

Unfortunately, it didn't work. After flashing it, the laptop is completely dead now. It doesn't power on at all.

I really appreciate your help!

try this bios.

[s.izadbakhsh]

Any Update?
I really appreciate your help!

[shiyab]

Hello everyone,

I need a working BIOS dump for a Huawei laptop. The device powers on but has no display.

Symptoms: The laptop turns on, and the keyboard is responsive (I can toggle the Caps Lock/backlight lights on and off), but there is absolutely no image on the screen. It looks like a corrupted BIOS issue.

Device Details:

• Model: Huawei NbDE-WDH9
• Board Model: H98D DAH98DMB8B0 REV B HF
• BIOS Chip: MX25L25673G @ WSON8 (8x6)
• CMIIT ID: 2020AP10393
• Serial Number (S/N): NQNPM23404000234

I have already desoldered the chip and backed up the original corrupted dump.

Thank you!

hi try

[s.izadbakhsh]

hi try

Thanks for the file.

Unfortunately, it didn't work. After flashing it, the laptop is completely dead now. It doesn't power on at all.

I really appreciate your help!

[SMDFlea]

Thanks for the file.

Unfortunately, it didn't work. After flashing it, the laptop is completely dead now. It doesn't power on at all.

I really appreciate your help!

try this bios.

[s.izadbakhsh]

try this bios.

Thank you so much! The BIOS worked and the laptop finally turns on now.

However, there is a new issue: I only get a display on an external monitor via HDMI. The laptop's internal screen remains completely black and doesn't light up at all.

Could this display issue be related to the BIOS config (like EDID or display profiles)? Is there any way to fix this in the dump?

Thanks again for your support!

[SMDFlea]

Thank you so much! The BIOS worked and the laptop finally turns on now.

However, there is a new issue: I only get a display on an external monitor via HDMI. The laptop's internal screen remains completely black and doesn't light up at all.

Could this display issue be related to the BIOS config (like EDID or display profiles)? Is there any way to fix this in the dump?

Thanks again for your support!

When it`s working via HDMI and not internal the fault is usually a blown fuse on the motherboard screen connection circuit , caused by removing the screen cable with the battery attached or adapter plugged in

[s.izadbakhsh]

When it`s working via HDMI and not internal the fault is usually a blown fuse on the motherboard screen connection circuit , caused by removing the screen cable with the battery attached or adapter plugged in

That makes a lot of sense, and it's highly possible that a fuse blew during the hardware troubleshooting.

Do you happen to have the Schematic or Boardview for this motherboard (DAH98DMB8B0 REV B)?

I want to check the screen connector area and locate the backlight fuse to test and replace it.

Thank you!

[SMDFlea]

The schematic has been requested in the schematics forum - https://www.badcaps.net/forum/troubl...ardview-needed .I don`t know if it`s available yet