This post provides the verified 16MB BIOS dump for motherboard 6050A2566301-MB-A04 used in HP ProBook 650 G1 laptops (L76 & L77 board versions).
The firmware has been tested for proper boot behavior and stable system initialization. It can be helpful for technicians dealing with firmware corruption or BIOS-related startup issues.
If your HP ProBook 650 G1 shows no display, remains stuck on HP logo, or fails to boot due to corrupted BIOS, this tested BIOS file may help restore the system.
| Parameter | Details |
|---|---|
| Motherboard | 6050A2566301-MB-A04 ( Bid L77 & L76) |
| Laptop Model / Series | HP ProBook 650 G1 |
| Main BIOS Size | 16mb |
| EC Controller | – |
| EC BIOS | – |
| Tested | Yes Tested Ok |
š¦ BIOS Package Information
- Main BIOS ā 16MB
- Firmware structure verified
- Clean Intel ME Region
- Boot tested for stability
- No BIOS password lock
- Suitable for BIOS corruption repair
š Update BIOS from Official HP Support (For Working Laptops)
If your HP laptop is powering on normally and the system is functioning properly, it is always recommended to update the BIOS using the official HP support website.
HP provides the latest BIOS updates based on your exact laptop model, ensuring compatibility and system stability.
š You can download the official BIOS update from HP here:
https://support.hp.com/us-en/drivers/laptops
Before updating, make sure to:
- Enter your correct HP laptop model number
- Download the latest BIOS version available
- Follow HPās official update instructions carefully
ā ļø Note: Official BIOS updates are safer for working systems. The BIOS files provided on this page are mainly intended for repair purposes such as BIOS corruption, no display, or boot failure.
ā When To Flash This BIOS
Flash in the following cases:
- Laptop powers on but no display
- System stuck at HP logo screen
- BIOS corruption or damaged firmware
- Automatic restart loop
- Boot failure after BIOS update
Do not flash if the motherboard has hardware short circuit, power rail issue, CPU failure, or other physical motherboard defects.
š Flashing Instructions (Professional Use Only)
- Locate the 16MB SPI BIOS chip on the motherboard.
- Take full backup of the original BIOS before programming.
- Confirm motherboard printed code 6050A2566301-MB-A04.
- Verify board version L76 / L77 before flashing.
- Program using SPI programmer (CH341A / RT809H / TL866).
- Verify write after programming.
- Clear CMOS after flashing.
- First boot may take slightly longer than normal.
š Important Notes
- Always confirm motherboard printed code before flashing.
- Do not use this file on a different board revision.
- Serial number or SKU may require manual update after flashing.
- EC BIOS is not included in this package.
- Use professional programming tools only.
š Disclaimer
These BIOS files are provided strictly for educational and professional repair purposes only.
Flashing BIOS involves technical risk. Proceed only if you have proper knowledge and professional equipment.
We are not responsible for any damage caused by incorrect flashing, wrong file selection, or improper programming procedure.
All brand names, logos, and motherboard images used on this website are the property of their respective companies. They are used here strictly for identification and educational reference purposes only.