Technical Support GA401QM-211.ZG14 Bios Chip Location

[laptoprepairdenver]

What is the location of the bios chip? There are two Winbond chips (25q16jwnio and 74m12jwsiq) but I don't know which one is correct. Thanks!

 

[Ahmad Safari]

25q16jwnio.

Send the picture of the board.

 

[laptoprepairdenver]

Ok, attached. Interesting though because when I read the chip with a cha341A programmer and software, it only shows the chip as being 2MB but the BIOS file is 16MB. Do I need to adjust the offset? Thanks!

 

[Ahmad Safari]

Yes, you should find 25Q128.
Did you test the part that I specified in the picture?

Remove the heatsink and send a clear picture.

 

[laptoprepairdenver]

Sorry for the delay, have been sick. Here are some updated pictures with no heatsink.

 

[Ahmad Safari]

I wish you health.
The IC I specified in the picture is the BIOS, and the IC you mentioned earlier is probably the graphics program.

 

[laptoprepairdenver]

Ok, the issue I have is when I read the chip with a cha341A programmer and software, it only shows the chip as being 2MB but the BIOS file is 16MB. Do I need to adjust the offset? Thanks!

 

[Ahmad Safari]

It is better to try with another IC. Your programmer may have a problem and you can get better results by testing on another IC.

 

[laptoprepairdenver]

For those who read this later here is the update. My eyesight is garbage. The CH341 programmer software I was using only had the w25q128bv in its chip list not the w25q128fv (which is the correct chip). After using colibri version 1.0.1.63 (which has the 128fv) it worked fine and programmed correctly.

TLDR - If your eyesight sucks, ask for someone to read chip lists in programmer software for you. Or make the text on screen bigger...