I can't find the Vbios chip !

[Lunnyx]

So i got a modify GTX 960, the card i have is this one :

• GV-N960WF2OC-4GD but the VGA bios is this one : https://www.techpowerup.com/vgabios/174280/evga-gtx960-4096-150302-1

Which make no sens, so i want to unbrick my GPU, i got a CH341A to make a flash but i need to find teh VBIOS chip of my GPU.


I found those 3 chip that looks like VGA BIOS one but can't find them in AsProgrammer.

If you can help me it would be great !!

 

[R-T-B]

The chips you have photographed are not eeproms. Beyond that look for other 8-pin chips and google the numbers on them.

 

[Solaris17]

Try reading this one.

 

[Lunnyx]

Try reading this one.

View attachment 361664

I try to read it but nothing happen, do you have the name of the chip that are on this GPU like this i can just search it in AsProgrammer ?

 

[Solaris17]

Guide: Flashing with a hardware programmer

Lets get physical So; you tried flashing your GPU and you didn't backup. Now you have some dude on the forum linking you a BIOS but you have no way to apply it because you don't have a spare GPU either. Well no worries friend. In this guide we are going to cover the simple procedures of...

www.techpowerup.com

Sure

 

[Lunnyx]

Guide: Flashing with a hardware programmer

Lets get physical So; you tried flashing your GPU and you didn't backup. Now you have some dude on the forum linking you a BIOS but you have no way to apply it because you don't have a spare GPU either. Well no worries friend. In this guide we are going to cover the simple procedures of...

www.techpowerup.com

Sure

This is the guide i was watching, but i need to find the name of the chip in AsProgrammer because the chip isn't auto detected

 

[Solaris17]

You can read more then. It should have “25” somewhere in the name. For unmarked proms you will need to make educated guesses. Starting with the more popular brands. For things like winbond with multiple revisions, starting at the parent usually the smartest way forward.

 

[:D:D]

If you check 2GB board seems much the same except configured with lower density VRAM.

Gigabyte GTX 960 OC 2 GB Review

Gigabyte's GTX 960 OC retails at an affordable $199, all while offering the same performance out of the box as the bigger G1 Gaming. Even though priced low, Gigabyte didn't compromise on OC potential, noise, temperatures, and power consumption as all of those are comparable to more expensive...

www.techpowerup.com

Unfortunately back picture is not clear enough to read chip package text but quite often firmware chips can be marked with paint.

So looks like 2 VBIOS chips. Can you read the chip text on your board?

Check datasheet for voltage and that of the programmer. Is this a non-working board you bought to fix or can you run it in the PC? If can run in the PC can try "nvflash64 --check" to possibly list selected EEPROM.
Of course backup both chips before changing anything.

 

[Caring1]

View attachment 361751
So looks like 2 VBIOS chips. Can you read the chip text on your board?

No, they are not Vbios chips.

So i got a modify GTX 960, the card i have is this one :

• GV-N960WF2OC-4GD but the VGA bios is this one : https://www.techpowerup.com/vgabios/174280/evga-gtx960-4096-150302-1

Which make no sens, so i want to unbrick my GPU, i got a CH341A to make a flash but i need to find teh VBIOS chip of my GPU.


If you can help me it would be great !!

What makes you think you need a programmer just to flash a Vbios onto the Graphics card?
Do you have integrated graphics or another GPU?

 

[ty_ger]

It seems like you have tried every chip and every chip isn't the VBIOS eeprom. How have you eliminated each one? What is written on each one?

Give us a clear picture of U10, U501, and U514.

Otherwise, hidden under the heatsink?

 

[:D:D]

No, they are not Vbios chips.

And you know this because?

A bit of digging shows a review for the 2GB card

Gigabyte GTX 960 G1 Gaming 2GB Video Card Review: Mainstream Price, High-End Extras - Page 2 Of 5 - Modders Inc

NVIDIA is aiming for the mainstream sweet spot with the release of the GeForce GTX 960 and Gigabyte is right along with them releasing a Windforce 3X variant under their G1 Gaming line equipped with a steep factory overclock of 1241 MHz core/1304 MHz boost up from the 1127 MHz core/1178 MHz...

www.modders-inc.com

For this card chips appear to be GigaDevice GD25Q21, 2Mb (256KB) 2.7~3.6V although you shouldn't assume the same and check.

 

[Lunnyx]

If you check 2GB board seems much the same except configured with lower density VRAM.

Gigabyte GTX 960 OC 2 GB Review

Gigabyte's GTX 960 OC retails at an affordable $199, all while offering the same performance out of the box as the bigger G1 Gaming. Even though priced low, Gigabyte didn't compromise on OC potential, noise, temperatures, and power consumption as all of those are comparable to more expensive...

www.techpowerup.com

Unfortunately back picture is not clear enough to read chip package text but quite often firmware chips can be marked with paint.
View attachment 361751
So looks like 2 VBIOS chips. Can you read the chip text on your board?

Check datasheet for voltage and that of the programmer. Is this a non-working board you bought to fix or can you run it in the PC? If can run in the PC can try "nvflash64 --check" to possibly list selected EEPROM.
Of course backup both chips before changing anything.

NVFlash doesn't work it give me error every time i try to run it, like they doesn't recognize EEPROM and i have No NVIDIA display adapters found, this is why i have to make a SPI flash.

It seems like you have tried every chip and every chip isn't the VBIOS eeprom. How have you eliminated each one? What is written on each one?

Give us a clear picture of U10, U501, and U514.

Otherwise, hidden under the heatsink?

Here is a better picture, if it can help :

And you know this because?

A bit of digging shows a review for the 2GB card

Gigabyte GTX 960 G1 Gaming 2GB Video Card Review: Mainstream Price, High-End Extras - Page 2 Of 5 - Modders Inc

NVIDIA is aiming for the mainstream sweet spot with the release of the GeForce GTX 960 and Gigabyte is right along with them releasing a Windforce 3X variant under their G1 Gaming line equipped with a steep factory overclock of 1241 MHz core/1304 MHz boost up from the 1127 MHz core/1178 MHz...

www.modders-inc.com

View attachment 361758
For this card chips appear to be GigaDevice GD25Q21, 2Mb (256KB) 2.7~3.6V although you shouldn't assume the same and cI

And you know this because?

A bit of digging shows a review for the 2GB card

Gigabyte GTX 960 G1 Gaming 2GB Video Card Review: Mainstream Price, High-End Extras - Page 2 Of 5 - Modders Inc

NVIDIA is aiming for the mainstream sweet spot with the release of the GeForce GTX 960 and Gigabyte is right along with them releasing a Windforce 3X variant under their G1 Gaming line equipped with a steep factory overclock of 1241 MHz core/1304 MHz boost up from the 1127 MHz core/1178 MHz...

www.modders-inc.com

View attachment 361758
For this card chips appear to be GigaDevice GD25Q21, 2Mb (256KB) 2.7~3.6V although you shouldn't assume the same and check.

I just tested with GD25Q20 and found that i think it's the right one thx dude !!

 

[Lunnyx]

Bruh i got exited to fast, when i open GPU Z to check if the flash work...
Spoiler : I still a EVGA BIOS
I tried on the pink chip, i will try the white one to see if it's working

 

[:D:D]

Tried to post some more info but TPU was down.

GIGABYTE GTX 9xx H2O/AIR BIOS Tweaking ?(ô?ô)?

www.overclock.net

So which BIOS is selected appears to depend on what display connector(s) are made and each VBIOS is slightly different as to which connectors are active. It's an old post and some parts/links are unfortunately broken.

 

[Lunnyx]

Tried to post some more info but TPU was down.

GIGABYTE GTX 9xx H2O/AIR BIOS Tweaking ?(ô?ô)?

www.overclock.net

View attachment 361776

So which BIOS is selected appears to depend on what display connector(s) are made and each VBIOS is slightly different as to which connectors are active. It's an old post and some parts/links are unfortunately broken.

I already ask to the gigabyte support and there is no dual VBios on my graphics card

 

[ShrimpBrime]

I already ask to the gigabyte support and there is no dual VBios on my graphics card

It's obvious you have a dual bios Gigabyte card of which whom are famous for including a back bios on everything that never seemed to work properly on any motherboard or video card.

The reason why is because it's designed for the failure of the OC bios chip which is not meant to be flashed. The recovery bios doesn't get activated. This procedure can take up to 30 seconds to activate the backup bios.

You really should follow the comrades advices given in this thread. You need the factory shipped bios flashed to both eeprom chips.

You know the 2 bios chips are true. The little arrow tells you how to orientate the programmer clip. These are janky, you must clip it on square and evenly. The eeprom chip needs power. You can install the card and turn the board on. This will power the eeprom chips. Leave cpu eps connector unplugged so the system doesn't post.

Anyhow, do your research as instructed and commit task to memory and good luck!

 

[StViolenceDay]

"No NVIDIA display adapters found" message from nvflash typically means that GPU has some hardware problems not related to VBIOS - maybe power-circuits problems or some damage related to PCIe connectivity.

I think so because GPUs even with desoldered VBIOS IC are listed in device manager as not-properly-working devices and are detected by nvflash as "NVIDIA gpu without ERPROM". But your case seems to be "no NVIDIA gpu detected at all" this looks more severe problem then VBIOS

 

[Lunnyx]

"No NVIDIA display adapters found" message from nvflash typically means that GPU has some hardware problems not related to VBIOS - maybe power-circuits problems or some damage related to PCIe connectivity.

I think so because GPUs even with desoldered VBIOS IC are listed in device manager as not-properly-working devices and are detected by nvflash as "NVIDIA gpu without ERPROM". But your case seems to be "no NVIDIA gpu detected at all" this looks more severe problem then VBIOS

The only think i know about this GPU, is that he got modified to work on a Mac Station.