Elitebook 840 g2 unlock attempt

[youngmrosterville]

Evening, I have an Elitebook 840 g2. I attempted to use the RCUnlocker because I needed a BIOS password after replacing motherboard. I was able to read, verify and copy chip. When I dragged file to RCUnlocker I received "missing unlockable content" message.

Elitebook 840 g2
5cg52437f4
7f88a076a316e411b70064ad8606e0ff

[shiyab]

Evening, I have an Elitebook 840 g2. I attempted to use the RCUnlocker because I needed a BIOS password after replacing motherboard. I was able to read, verify and copy chip. When I dragged file to RCUnlocker I received "missing unlockable content" message.

Elitebook 840 g2
5cg52437f4
7f88a076a316e411b70064ad8606e0ff

THIS NO BIOS CHEK

[youngmrosterville]

In reading about that message it looks like I was reading the wrong chip this is the other. This is from the winbond 25q16dvsig

[shiyab]

In reading about that message it looks like I was reading the wrong chip this is the other. This is from the winbond 25q16dvsig

hi try unlock

[youngmrosterville]

Thank you shiyab. Apologies in advance for the noob question... As I posted in my intro, I replaced my partners motherboard in her Elitebook 840 g1 because the charging port was broken. I installed a motherboard from what I discovered was an Elitebook 850 g2; kept the old hard drive but installed one additional 8GB RAM to make 16GB, a new smartcard reader and wifi network card.
I de-soldered bios, soldered it to ch341a programmer, and utilized ASProgrammer to write and verify unlocked bios.
After reinstalling, the laptop does not post and the screen is blank. I have an LED that flashes white and orange constantly without a pattern and no illumination of power button nor CapsLock.

[shiyab]

Thank you shiyab. Apologies in advance for the noob question... As I posted in my intro, I replaced my partners motherboard in her Elitebook 840 g1 because the charging port was broken. I installed a motherboard from what I discovered was an Elitebook 850 g2; kept the old hard drive but installed one additional 8GB RAM to make 16GB, a new smartcard reader and wifi network card.
I de-soldered bios, soldered it to ch341a programmer, and utilized ASProgrammer to write and verify unlocked bios.
After reinstalling, the laptop does not post and the screen is blank. I have an LED that flashes white and orange constantly without a pattern and no illumination of power button nor CapsLock.

FLASH ORG BIOS chek

[youngmrosterville]

FLASH ORG BIOS chek

I am not sure I understand your statement "FLASH ORG BIOS"
Being a noob I made many attempts using the clip with my programmer.
"Elitebook 840 g2 MX25L12873F backup" is the backup from from when I soldered to programmer.
I have other files that were from using the clip.
"Elitebook 840 g2 backup_8" is the backup after I wrote the BIOS with chip soldered to programmer.
"Elitebook 840 g2 copy_5" is what I posted and you unlocked "16MB_UNSS"

[shiyab]

I am not sure I understand your statement "FLASH ORG BIOS"
Being a noob I made many attempts using the clip with my programmer.
"Elitebook 840 g2 MX25L12873F backup" is the backup from from when I soldered to programmer.
I have other files that were from using the clip.
"Elitebook 840 g2 backup_8" is the backup after I wrote the BIOS with chip soldered to programmer.
"Elitebook 840 g2 copy_5" is what I posted and you unlocked "16MB_UNSS"

Flash original backup bios chek

[youngmrosterville]

Flash original backup bios chek

Update: My Elitebook 840 g2 still does not power on.
I found the CH341 needed to be modified to bring the data lines to 3.3v. Before modifying, I was unable to completely erase data from the BIOS chip.
I reflashed with original BIOS to the chip but still will not power on. I wonder if the flash was corrupted from use of the clip and the data not completely errasing from the chip.
There is no light from the power button or any keys. The status LED seems to blink more rapidly white/orange but this could be inaccurate.

[youngmrosterville]

shiyab attached are 2 original and EC

[SMDFlea]

shiyab attached are 2 original and EC

I`ve split your posts off from the RCUnlocker thread into a new thread.

[youngmrosterville]

SMDFlea Thank you.