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Nice to meet you. I'm visiting from Shizuoka Prefecture, Japan.
It's a place rich in nature with views of Mount Fuji, Japan's highest mountain.

In the summer of 2025, I purchased three cheap, used, junk PCs for my family.
I needed to check their health, and became interested in BIOS/UEFI and the boot process.

I found this site because I came across an article that identified the BIOS chip in the PC I purchased, complete with photos.
The chip was marked "25Q128A" and appeared to be a flash ROM.
However, I don't know which manufacturer...

Please help, I get a HP board (as title). It failed to boot, i tried clear cmos and when I plug the dc jack, the machine auto power on with 5 short beeps (HP said: BIOS recovery successful) but no picture and all the fans making noise like Airplane is taking off. I want to try a bios flash...
The bios chip is Winbond w25q128bv (soic16).

This specification for the HP Compaq Pro 6305 SFF can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the Compaq Pro 6305 SFF boardview and Compaq Pro 6305 SFF schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download...

This specification for the HP Compaq Pro 6300 SFF can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the Compaq Pro 6300 SFF boardview and Compaq Pro 6300 SFF schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download...

This specification for the HP Compaq Pro 6305 can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the Compaq Pro 6305 boardview and Compaq Pro 6305 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for...

This specification for the HP Compaq Pro 6300 can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the Compaq Pro 6300 boardview and Compaq Pro 6300 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for...

This specification for the HP Compaq Pro 6300 can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the Compaq Pro 6300 boardview and Compaq Pro 6300 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for...

This specification for the HP Compaq Pro 6300 can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the Compaq Pro 6300 boardview and Compaq Pro 6300 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for...

Re: HP Compaq Pro 6300 SFF net bios


HP Compaq Pro 6300 Base Model Small Form Factor...

Re: HP Compaq Pro 6300 SFF net bios

Hi, attached is my broken BIOS. The serial number of my machine is: CZC23765CZ
The chip in question is: Winbond 25Q128BVFG (The reading was done with Winbond 25Q128BV SOP16)
Model: HP Compaq 6300 Pro SFF
Product No. QV985A
THANK YOU...

Re: HP Compaq Pro 6300 SFF net bios



Thank you, I tried, sadly it doesn't work. Maybe my mainboard is broken....

Re: HP Compaq Pro 6300 SFF net bios



try this too.....

Re: HP Compaq Pro 6300 SFF net bios



I tried #5 and it didn't work, The S/N above I read on the main board, I just found another one on the case :

JPA405Y2MV

Thanks you !...

Re: HP Compaq Pro 6300 SFF net bios



did you try station #5??..after the series I can't find anything on the official website..you wrote the S/N correctly.....

Re: HP Compaq Pro 6300 SFF net bios



s/n:PCEBF0HD65V9UF

Help me please !...