Hp elitebook 840 g5 bios password
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Hi all i need clean file for tHis bios dump Hp elitebook 840 g5. i5 8 generation sn 5CG92229D3
yours
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Hello everyone, need help in Bios unlocking this Lenovo 840 G5. I tried with the HP unlock tool on the larger Bios chip but it didn't work. So I am uploading both bios chips could anyone remove the bios lock? Many thanks!Comment
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Not sure if this is important, but when I boot and press F10, before getting the Bios Administrator Password screen, I get this screen which say PROPERTY OF GHD then the HP logo and then the message Protected by HP Sure Start.
I tried looking for the string "PROPERTY OF GHD" in both the 16MB and 32MB files but did not find anything. Not sure what to try next?Comment
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Ok, so figured it out and will post the solution in case someone has the same issue. Unlocking the 32MB file did not to the trick. Used RcUnlocker on the 16MB chip and that did the trick it is now unlocked. Many thanks to all of you and thanks Peste!
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Hi everyone,
I have a HP 840 G5 that is admin password locked (abandoned from a company). I have been trying a good way to unlock it and reading up on almost the entire thread here it seems reading out the 32MB chip patching it with RCUnlocker is what most people say. I did this (was a Winbond 25Q256JVEQ chip) and to my surprise RCUnlocker told me that the 32MB file was not compatible and I should try a 16MB file. My two questions to anyone who could bring more insight:
1. Is RCUnlocker indeed not compatible with 32MB BIOS files? It seems a lot of people have run it successfully
2. Is it so that SOME 840 G5 are password locked in the 32MB BIOS and others in the 16MB? It seems very inconcistent.
Thanks in advance!Comment
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Hi everyone,
I have a HP 840 G5 that is admin password locked (abandoned from a company). I have been trying a good way to unlock it and reading up on almost the entire thread here it seems reading out the 32MB chip patching it with RCUnlocker is what most people say. I did this (was a Winbond 25Q256JVEQ chip) and to my surprise RCUnlocker told me that the 32MB file was not compatible and I should try a 16MB file. My two questions to anyone who could bring more insight:
1. Is RCUnlocker indeed not compatible with 32MB BIOS files? It seems a lot of people have run it successfully
2. Is it so that SOME 840 G5 are password locked in the 32MB BIOS and others in the 16MB? It seems very inconcistent.
Thanks in advance!Last edited by rddube; 01-27-2025, 09:11 PM.Comment
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That is what led up to these questions, I suspect you are right, but in other replies in this thread it is clearly stated to be the 32Mb chip that should be patched (which seems impossible to me using RCUnlocker). Seems a bit inconsistent and would be interesting to understand if this is different in different versions of the 840 G5.Comment
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rddube I was hoping to not have to desolder the 16MB chip (since I successfully connected to the 32Mb using wires). Just to double check: How did you connect to the 16Mb chip? Desolder? Clip? Wires? It seems that with wires my flash device says (no connection to IC) and at the same time a LED is flashing yellow on the motherboard (probably powered backwards from the chip flasher).Comment
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rddube I was hoping to not have to desolder the 16MB chip (since I successfully connected to the 32Mb using wires). Just to double check: How did you connect to the 16Mb chip? Desolder? Clip? Wires? It seems that with wires my flash device says (no connection to IC) and at the same time a LED is flashing yellow on the motherboard (probably powered backwards from the chip flasher).Comment
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OK, so everything worked out just fine, let me share my learnings from this:
1. HP 840 G5 more often that not seems to have password configured in the EC chip on the backside of the motherboard, in my case a Winbond 25Q128JV SMD chip.
2. This chip can't be read or programmed when connected to the motherboard, there seems to be a protection kicking in. Must be desoldered.
3. The chip can easily be read and programmed with CH341A programmer when desoldered, and RCUnlocker worked on the first try.
4. Beware to read more than once and compare readouts, also after programming, read back several times and file compare.
5. Be very careful when resoldering to use enough flux and flow the connecting pins and pads generously.
All in all it worked great, but it was tricky to arrive at this solution due to the contradictory information in this thread. At least this procedure should work for all devices with the same motherboard type than mine.
Thanks rddube for the help to arrive at the right answer.Comment
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hi, please help me remove the admin lock.
840 g5
sn: 5CG9152N96
THANKS IN ADVANCEAttached FilesComment
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Looking to remove password from this HP 840 G5 bios.Attached FilesComment
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RULES UPDATE for BIOS requests/offers AVOID BANNING, READ BEFORE POSTING
https://www.badcaps.net/forum/troubl...before-posting
You MUST:- 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 ) ,The serial number, make, full model number, motherboard model and revision (except QR codes) must be written/typed at your request as per the rules. Not as a picture, part of the file name and so on.
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Try and GIVE feedback
First boot load bios factory defaults, save and exit and then at the next boot disable security options
You must fill your DMI manually.Attached FilesComment
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But today it's not accepting my password. I'm %100 sure i'm entering the correct password.
I'm trying to reset my bios without success.
I tried :
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by tlindiSublect line continuation: ... Jaguar IDS PC aka Panasonic
>Read BIOS guides, methods, resources and tools
>
Ack
>Try the method at BIOS guides, methods, resources and tools before requesting help
>
Ack
>Explain you were not able to succeed with the methods at BIOS guides, methods, resources and tools
>
python ./main.py "/mnt/c/temp/205605f9e1b60403a41787efeffe9cad-flas_maybe5.BIN" --output-dir "/mnt/c/temp/205605f9e1b60403a41787efeffe9cad-flas_maybe5.txt"
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Channel: BIOS Requests ONLY!
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Channel: BIOS Requests ONLY!
01-14-2024, 06:35 AM -
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