Hello,

So far I've only tried to read the chip to the left of the main memory, but it doesn't work because I get an error message that an ID is not correct???...

I would like to do that but I don't know where the ec chip is on the board. Is there a picture where you can see the chip?

It is an HP ProBook 650 G5 Notebook PC (base model)
Product number
5EG86AV
The motherboard should be an L58731-601

Hello,

yes, of course, sorry.
Unfortunately I currently only have the name HP Probook G5 with the serial number 5CG0359DS5. I couldn't find a number or type designation on the motherboard. But I'll check again to see if I can find anything there. But my main concern was whether there was something known about when the BIOS chip on the laptop itself uses the recovery function to change the chip in such a way that it can no longer be read with an eprom reader.
greeting
Dieter​

Hello,
I tried to read the BIOS chip from an HP Probook 650 G5 with a tl866ii reader - unfortunately without success. I always get an error message that the chip ID is incorrect. Since I suspected a problem with the reader, I bought a new EPROM of the same design. I can easily read and write this chip with the reader without any error messages. Then I unsoldered the original chip from the board and soldered the new chip on. After restarting the laptop, a BIOS recovery was automatically carried out. After that I could no longer read the new chip. Apparently the chip is changed again in such...

Hello, I am a computer technician from Germany. I am 56 years old and have been working for a large telecommunications company for 40 years. While looking for a way to remove the BIOS password from an HP 650 G5, I came across the very good forum here. Unfortunately I haven't found a solution to my problem yet but let's see if it still works.
Kind regards
Dieter​