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,
Iโm 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, Iโm 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. Hereโs a full breakdown:
๐งฉ 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.... -
Hi, my laptop wont boot at all
With original bios no POST, only LED lights
With alternative BIOS from model TP500LN (flashed via programmer) the notebook works again
Some issues
A- with bios from 500LN, it won't update from bios of model 500LA (from 500LN v203 to 500LA v300)
B- If updated from 500LN version 203 to 300, the battery stops being recognized
Things I tried
1- Update / clear ME: Took the non working bios, made a backup, and did this: https://www.badcaps.net/forum/troubl...theory/trouble...
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