HP840 G4 I7 7TH GEN 6050A2854301-MB-A01 Tested OK !
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Corrupted BIOS (no WIFI, graphics drivers crashing, USB port reset request failed, etc)
Working BIOS (taken from 15.0.41.2158_CON_LP_B_PRD_EXTR_AB7F54AC but I fixed some FLEX I/O for sata ssd and GPIO VCCIO config for this model)
System SKU NE14I310
BIOS Version APD-BI-14-XU133TR130-TA60F-143-E ?
Motherboard XU133T rev 1.3
Serial Number IPNBI3X240SM2A01095
Processor 11th Gen Intel(R) Core(TM) i3-1115G4 @ 3.00GHz 3.00 GHz
RAM 8.00 GB
NOTE: I'm new repairing and not sure if this is everything that needed to be configured, but the BIOS... -
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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Hello, I have an old Dell G3 3579 (ST: 2WQ7LP2-8FC8) with a newer 8FC8 BIOS password. I have successfully attached to the flash chip (W25Q128JVSQ) on the motherboard with a CH341A programmer and made several modifications using Intel FIT (e.g., allow software SPI write) without bricking. I was also able to boot to a modified GRUB shell where I attempted to edit many BIOS security related options like BIOS Guard/Lock, Flash Signature Override, ME FW Image Re-Flash, etc.
Unfortunately, some of these modifications like to Intel BIOS Guard failed because it is fused into the PCH. Also,... -
Hi,
So i've bough a ch341 programmer, and the chip was CH341B . the test clamp was not working( when connecting bios using test clamp, ch341 device was disconnecting) I tried soldering the bios on the provided board, soldering the bios I could read the chip but could not write or erase. ASprogrammer , neo, ch341a programmer... all programmer software was hanging and device was disconnecting after few second of erase/write operating.
So then I have soldered a capacitor(whatever I had..[10v ~470uf ] ) from VCC to GND on my provided pcb where you solder the bios
now all... -
Hi everyone,
I have been doing hardware repair as a hobby for some years now and recently decided to learn about repairing laptops as a fun challenge.
I managed to get my hands on a "HP Pavilion Gaming 15-ec2523nd" notebook that only shows a white power LED and doesnt respond to anything.
After initial testing I concluded the bios seems to be corrupted since all voltages are normal and there are no shorts. HP has a feature for a bios restore from USB with winkey+B for this model. This did not work.
I have desoldered the bios chip (GigaDevice...