HP Pavilion - 17-ab405na
Please repair my bios file not display: Here is the info
HP Pavilion - 17-ab405na
Board Number: DAG37LMBAD0 REV
S/N# 5CD8239TF7
ProdID 4CK41EA#ABU
HP Pavilion - 17-ab405na
Board Number: DAG37LMBAD0 REV
S/N# 5CD8239TF7
ProdID 4CK41EA#ABU
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Hi everyone,
I have been doing hardware repair as a hobby for some years now and recently decided to learn about repairing laptops as a fun challenge.
I managed to get my hands on a "HP Pavilion Gaming 15-ec2523nd" notebook that only shows a white power LED and doesnt respond to anything.
After initial testing I concluded the bios seems to be corrupted since all voltages are normal and there are no shorts. HP has a feature for a bios restore from USB with winkey+B for this model. This did not work.
I have desoldered the bios chip (GigaDevice... -
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'm dealing with a classic BIOS corruption issue on an HP Pavilion 15-n058sr and hoping someone here might have the original BIOS file or point me in the right direction.
Symptoms:- Laptop powers on but no display at all (completely black screen)
- Caps Lock blinks twice with a pause, then repeats continuously
- F12 LED stays on permanently
- No POST, no boot sequence, nothing on screen
Based on HP diagnostic codes, the 2-blink Caps Lock pattern indicates BIOS corruption/failure.
What I've tried:- Hardware reset (battery removal, power
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Please post any suggestions and corrections to the discussion thread: https://www.badcaps.net/forum/showthread.php?t=103527
For additional information on SPI ROM, BIOS, EC, Intel ME, etc., please read: https://github.com/ISpillMyDrink/UEFI-Repair-Guide/wiki
Table of Contents:
1. How to dump and flash
1.1. BIOS
1.1.1. Programmers
1.1.1.1. T48
1.1.1.2. T56
1.1.1.3. RT809F
1.1.1.4. RT809H
1.1.1.5. EZP2019
1.1.1.6. CH341A
1.1.2. Adapters
1.2. EC
1.2.1. Programmers
1.2.1.1. SVOD3
1.2.1.2.... -
Hello everyone,
I recently bought a non-working Asus Zenbook Pro Duo OLED UX8402ZA that was listed for parts only. The seller mentioned that it had no display output but that the charging lights worked.
When the laptop arrived (without a charger and SSD), I connected a charger and confirmed with a multimeter that it was charging the battery. However, when I tried to power it on, only the backlight of the secondary display came on. There was no image, and it didn’t boot into the BIOS.
I decided to try flashing a new BIOS, but since I didn’t want to desolder...
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