Thanks for the help and the 08328 file. I have the machine back working, everything is right. Serial number, Windows key, all ok.

Modified the file with the needed readout parts from the corrupt bios file, and I managed to lock the manufacture mode. Learned some lessons.
I stumbled about something really stupid. I tried my new programmer to connect, erase, flash, verify and all the usual things with a new 25Q64 chip. To check the needed procedures. Then I flashed the soldered chip in the laptop. At first, I didn't verify. This was the fail. The chip has to be blanked to FFs...

Hello,
i have a laptop with bios update failed. Black screen after failed bios update. Any solution? I'm not quite clear about the needed procedures and identifying the correct bios file.
Does anybody have a replacement file? (CH341A programmer available)

Model: HP 250 G6
SN: CND7495TH3
ProdID:3GJ51ES#ABD
Motherboard: CSL50 / CSL52 LA-E791P Rev: 2.0​...

Re: New Members - please post your introductions here

Hi,

I just found this interesting forum while looking for repair tips for a computer monitor. I am from germany. In electronics my main interest is vintage computing hardware, like the C64 and all the others. I have a degree in electrical engineering and work as specialist for computer controlled measurement devices.

Regards
hexagon