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hp 840 g8 bios password proplem.lock please help
Hello badcaps family. I have the rt809f bios programmer. I need help for my HP 840 G8 laptop. There is a password in the bios. That's why I can't do anything. Can I write bios or ec with rt809f? Please help. I need your ideas.
I removed the bios chip, but I do not have a bios device to write this. What can I do? What device do I need to buy to write the rt809f bios?Comment
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Re: HP 840 G8 Bios Unlock
Hello my dear friends! Which chip should I read to unlock the BIOS on the HP EliteBook 840 G8?Attached FilesComment
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Re: HP 840 G8 Bios Unlock
Hello! I read the BIOS from the chip next to DIMM2, who can unlock it?Attached FilesComment
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Re: HP 840 G8 Bios Unlock
RULES UPDATE for BIOS requests/offers *AVOID BANNING, READ BEFORE POSTING*
https://www.badcaps.net/forum/showthread.php?t=103570
You MUST:- Read BIOS guides, methods, resources and tools
- Try the method at BIOS guides, methods, resources and tools before requesting help
- Explain you were not able to succeed with the methods at BIOS guides, methods, resources and tools
- Use search function in case someone already answered your request
- Post under a related thread if it exists
- Provide the full machine model number, serial number (or Service tag, SNID) and the board model number (see https://www.badcaps.net/forum/showthread.php?t=88758 )
- Name your thread with model numbers and request
- Provide a BIOS/EC dump if possible
- Attach files directly to your post instead of linking to external websites
- Post what the problem is, be specific - black screen, no boot, running slow, password.
Do NOT post "clean me", "clear bios", "clean bios", "bios need" or other such terms
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Re: HP 840 G8 Bios Unlock
Hi guys,
I remove password by mod the chip near the EC, the password gone, but now I have error message "HP Endpoint Security Controller Problem", how to solve this?
I attached my orignal dumps.Comment
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Re: HP 840 G8 Bios Unlock
Clean the ME firmware - https://www.badcaps.net/forum/showthread.php?t=103526
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Any donations to badcaps are welcome, click this link to donate . Thanks to all the supporters
https://www.badcaps.net/donateComment
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Re: HP 840 G8 Bios Unlock
Hello, i have an 840 G8 with password
SN : 5CG151BG1M
can someone help me ?
of course i try with RCU, but do not work with 32mo..
I have both chip W25Q256 (front) + W25Q256 (back)
both are in .zip file
thanks you very much !
ps : donation just make ! thank for this good forum...Last edited by il60; 10-31-2023, 08:15 AM.Comment
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Any donations to badcaps are welcome, click this link to donate . Thanks to all the supporters
https://www.badcaps.net/donateComment
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Re: HP 840 G8 Bios Unlock
thanks !!
so the front bios, not need to change it ? simply replace it and just program bios chip back ?Comment
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First of all thanks to all of our members who have posted previously all methods posted here.
Please leave a comment if you find something new,or have anything else to add.
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Find by serial number,model number or series
If you know the laptop serial or model number go to HP support https://support.hp.com/us-en/drivers/laptops .
Enter the serial number or model number and click submit.On the next screen you will have to enter the OS
Operating system and OS version.If... -
Hey guys,
Hope you all are doing well. I come here from Win-Raid because I am having issues disabling Flash Protection Range Registers so I can flash my BIOS from within Windows using Intel's IFW tool/using flashrom within Linux, however I cannot due to the above mentioned error.
Here is my thread on Win-Raid detailing the whole process I went through: https://winraid.level1techs.com/t/re...h-gen/95478/27
Essentially I managed to boot into Windows while shorting PINs 1+5 of my audio chip to disable the HAP bit... -
Hi folks,
I got a Dell Optiplex 7010 micro PC (Exact Model) with 8FC8 BIOS and locked out admin password. I attempted to remove the password by patching the BIOS via info from this thread: https://www.badcaps.net/forum/troubl...ssword-patcher
After flashing the patched the BIOS, the PC is unresponsive with a solid AMBER power LED (not documented in manual anywhere)
Steps I took:- Read BIOS with CH341a, verified hash twice
- Patched
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Hi there,
I have a 14" Lenovo Laptop (Flex 5 14ALC05) which has a boot issue.
The little LED on the power button is flashing slowly and nothing happen.
This unit do not have any BIOS button cell battery so I tried many times draining the power but it is still not powering on.
So I decided to flash the BIOS using a cheap programmer.
And I was successfully able to read the content (exactly 16MB file) which BTW is a WINBOND 74m12jwsiq (according to the package inscription - but detected as W25Q128FW in the software - IMSProg on Linux)
I also... -
Hello,
I am trying to repair a Dahua NVR4216-4KS2 that is not booting.
The main BIOS/firmware is stored in an SPI flash EEPROM (Winbond 25Q128, labeled as U130 on the PCB).
I have a CH341A programmer and I already attempted the following steps:- Identified the correct chip (W25Q128, 3.3V SPI flash).
- Tried to read the contents with CH341A Programmer software. The dump seems corrupted and I often get the error: “Chip with the contents are in disagreement.”
- Compared several chip type selections (24Cxx and 25Qxx families) to confirm it is indeed a 25 series SPI
08-19-2025, 09:23 AM
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