Question MSI GTX 750TI 2GB twin frozr not working

[aJIekc3D]

Got this card for free, previous owner said he tried to update it's BIOS and it's not working since then. I tried to flash it with ch341a and noticed that suspected BIOS chip next to bios switch is empty (full of zeros), and noticed that winbond chip on the back of the card is flashed with actual gpu bios just like freaking mosfet that near it. The card does not produce an image and when launched with it in pci-e, the speaker gives one long and two short signals (gigabyte), if I boot up with other gpu and connect this one via riser it shows up hidden in the device manager with code 28. Nvflash don't really want to work so I'd be really if anyone with this card can make dumps from all chips on the PCB (bios and other two)

 

[Lutfij]

Welcome to the forums, newcomer!

The card does not produce an image and when launched with it in pci-e, the speaker gives one long and two short signals (gigabyte)
1 long beep, 2 short beeps= display issue/GPU card is dead. It'd still be a good idea to mention the make and model of the motherboard,.

Nvflash don't really want to work so I'd be really if anyone with this card can make dumps from all chips on the PCB (bios and other two)
It's probably a paperweight at this point. Highly likely that the person who gave you the GPU tried everything possible before handing it over.

If you try the GPU on a motherboard that has a POST code readout, and you see a B2 error code, that would mean the memory will need replacing, and it eventually will be more expensive than actually buying a latter generation GPU for the effort you'll undergo to revive the GPU if your memory is the issue.

 

[BFG-9000]

That is a rare card with the vBIOS switch that lets you choose between forcing UEFI or Legacy BIOS modes. That lets it work even with those very early UEFI boards which have an incomplete implementation of UEFI without GOP, where a standard Hybrid vBIOS would just go down the UEFI path to a black screen.

Since it still has one BIOS installed, what happens if you try the switch + put it into an actual Legacy BIOS PC, or enable CSM in your motherboard's BIOS?

 

[aJIekc3D]

Welcome to the forums, newcomer!

The card does not produce an image and when launched with it in pci-e, the speaker gives one long and two short signals (gigabyte)
1 long beep, 2 short beeps= display issue/GPU card is dead. It'd still be a good idea to mention the make and model of the motherboard,.

Nvflash don't really want to work so I'd be really if anyone with this card can make dumps from all chips on the PCB (bios and other two)
It's probably a paperweight at this point. Highly likely that the person who gave you the GPU tried everything possible before handing it over.

If you try the GPU on a motherboard that has a POST code readout, and you see a B2 error code, that would mean the memory will need replacing, and it eventually will be more expensive than actually buying a latter generation GPU for the effort you'll undergo to revive the GPU if your memory is the issue.

Hello. Is there a way to check if VRAM is working without a postcard? Also my mobos is gigabyte s2h b450 and gigabyte GA-78LMT-USB3 rev 6.
Previous owner is my old acquaintance, and I can say with confidence that he does not understand computers at all and even asks me to help with the most trivial things, so I don't think he did anything to restore the card.
GPU looks interesting enough and I would like to restore it for the collection

 

[aJIekc3D]

That is a rare card with the vBIOS switch that lets you choose between forcing UEFI or Legacy BIOS modes. That lets it work even with those very early UEFI boards which have an incomplete implementation of UEFI without GOP, where a standard Hybrid vBIOS would just go down the UEFI path to a black screen.

Since it still has one BIOS installed, what happens if you try the switch + put it into an actual Legacy BIOS PC, or enable CSM in your motherboard's BIOS?

Under legacy bios you mean something that was before UEFI systems like 775s mobos?
I'll definitely try this, but I doubt it will help since the contents of all the chips were mixed up and there's no actual datasheet except wiring schematic so I don't really understand which one of the chips is bios: the one next to the switch, or the one on the back side next to the power driver. In my region, there were no people with such card anymore, and owners from other regions do not have a programmer to make dumps, or ask for half the price of the cost of the card itself , which is absolutely absurd.