Elitebook 840 g3

[sarry86]

Hi guys, I have this elitebook 840 g3 with model no 6050A2892301-MB-A01 that blinks five times on caps lock and num key, I would like to desolder the bios and check it using CH341A programmer, I have noticed that there are two different bioses on this board, could someone enlighten me which one is the main bios and whether I should program the main one or both? Please 🙏

[sarry86]

I can't find the more info about this anywhere

[mon2]

1) backup the entire flash before erasing or reflashing it

2) share the top side pics or part number of each flash. Then review the datasheets. The larger density flash is the one that will be the main bios. Other is the ec bios.

3) start with the main bios - be sure the voltage is correct for your flash and programming tool else the flash can be killed.

[sarry86]

1) backup the entire flash before erasing or reflashing it

2) share the top side pics or part number of each flash. Then review the datasheets. The larger density flash is the one that will be the main bios. Other is the ec bios.

3) start with the main bios - be sure the voltage is correct for your flash and programming tool else the flash can be killed.

I have these two

[mcplslg123]

25Q128 is the main bios

[sarry86]

25Q128 is the main bios

Thanks, I tried erasing it, blank verify all went smooth, I can write the bin file to it but I get error when verifying after flashing it, could the chip be fault?

[mon2]

Post the full details of:

1) which programming s/w and version was used
2) which make / model of the part was selected
3) where exactly did the verify fail

[mcplslg123]

Thanks, I tried erasing it, blank verify all went smooth, I can write the bin file to it but I get error when verifying after flashing it, could the chip be fault?

It could be the chip itself is bad but woth updating the software for your programmer. Which programmer you used?

[sarry86]

It could be the chip itself is bad but woth updating the software for your programmer. Which programmer you used?

I use CH341A

[sarry86]

Post the full details of:

1) which programming s/w and version was used
2) which make / model of the part was selected
3) where exactly did the verify fail

I used Neo programmer to do it and now it verify OK no problem, but the pc still gives me five blinking codes on caps lock and num lock, I have tried googling it everywhere for the schematic but no success, I have seen some requests here from the people who uses the same laptop but there's none. HP Elitebook 820 G3 6050A2892301-MB-A01

[mon2]

Be sure that the QE bit = ‘1'.

[sarry86]

Be sure that the QE bit = ‘1'.

I am sorry but how do I check that?

[mon2]

Personally not aware of the exact details of your programming software but this QE bit is one of the registers present inside of the flash chip. What I am concerned about is that if you perform a full chip erase - does this also reset this QE bit to a value of '0'? If yes, then the logic board is unable to use the same flash in QSPI (quad SPI) mode. Review the details of your programming software to check if there is a QUAD or QE flag setting. You may have to review the use of another software tool to access this register. If you purchase a fresh chip with the same part number then it will be shipped to you with QE = '1'. Again, not sure if this bit resets to '0' after a full chip erase.

Update: Yes, your tool can do this -> review the SREG configuration and there should be a flag / checkbox for the QE bit. Share a pic of this screen but be sure it is checked to ENABLE this QSPI feature.

Neo Programmer New Software...22/06/2021

- V2.2.0.8
- More Chip IC's Added
- Fixed Bugs
- With SREG edit, possibility to edit QE when the bit is set, otherwise it is disabled.
- 100ms delay between each busy status checks during SPI 25 erase.
- SREG remove protection popup for erase and write SPI memories.
- ajout d'un delais de 10ms apres l'ecriture des status registers et 5ms dans chaque boucle de controle(sauf NAND).

[SMDFlea]

Don`t worry about the QE bit .

840 G3 flash configuration

[piernov]

"Quad Output Read Enabled" is set to "Yes" though.

[TECHO TN]

Hello
i have thé sale model i programmed the bios many times but no result
the dame error everytime 3 long beeps then 2 short beeps
Can anyone help me?

[mon2]

3 long beeps + 2 short beeps = RAM / memory error.

https://youtu.be/tJWSZkIGxDg

[TECHO TN]

3 long beeps + 2 short beeps = RAM / memory error.

https://youtu.be/tJWSZkIGxDg

I changed it
I tried 4 different ram but i have allways the problem

[Stevedb]

Check the pins for loose pins mostly the end pins are loose