Question Bricked Gigabyte Radeon 5700 XT OC 8Gb making motherboard doesn't POST (solutions?)

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Jokin

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Hi all.

I was trying to flash the BIOS of a Gigabyte Radeon 5700 XT OC 8Gb Rev1.0, but, I made a mistake, and now it's bricked.

The problem I am facing, is that, even though my Motherboard, (Gigabyte GA-B250-FinTech) has an integrated graphic card, when I plug in the 5700XT the mobo, doesn't POST, and I am having a black screen. It seems the mobo detects the bricked card (I think) and it is not starting.

I read that the some other motherboards, can POST correctly even when they have a bricked cards conneted (configured as a secondary graphic card).

Does anyone know motherboard that allows to do that? (The idea is to buy it, and have it as a backup/restoration motherboard, in case of another bricked card).

I know there are some method disassembling the card, and cutting some BIOS memory connections can fix the problem, but, I prefer a software fix if possible. This will be the last bullet if everyother tries fail.

Thanks for your help.
 
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Mini_Me
Jokin hat gesagt. :
I tried that with two different methods:
1) With the pcie*1 disconnected, turn on the pc, and while the motherboard is loading I connected the pcie*1 and the fan started to work, but when I logged in windows/Hiveos, the card is not detected.
2) With the pcie*1 connected to the motherboard, but the usb cable from the riser to the pci disconnected, and as soon as the motherboard started loading I connected the usb to the riser, but same result, the fan started to work, but the card is not detected by windows or hiveos.
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In case the guide above did not work then let us do the below,

- Either while the pc is turned off and the card connected to the pcie x1 using a gpu riser adapter, after you turn the pc on, press F12 on the loading...
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Jokin hat gesagt. :
Well great news, finally the card is back, the steps using FreeDOS worked really nice :)
I had to use the specific version of ATIflash for DOS: Download ATI ATIFlash / AMD VBFlash 4.68 | TechPowerUp

I applied the method of having the pcie*1 disconnected and when the motherboard was booting connect it back, but it took me a few tries to make it work (finally I realise that the pcie*1 has to be connected on the exact moment when the motherboard is checking the VGA connections at start (while the VGA status led is ON), if I connect the pcie before or after it doesn't work.

Thank you so much for your time and for all your knowlegde (I have learnt a lot with this, and hopefully I will not brick another card :( ) :)
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I am exactly in the same situation as you were. I dont have a GPU Riser card.
I have tried putting my graphic card on the 2nd pcie and when power up its stucked with "vga" lamp on motherboard.
I have also tried disconnect the power and when bios is loaded power up then i connect power to this gpu but in windows nothing being shown.
 
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if you flash wrong vbios, and have CSM disabled on MB BIOS, it won't post. I enabled CSM, MB posted, OS booted, i had asterisk by the RX5700XT in the Device Manager, but i was ale to flash it with correct bios.
at least, that was my case. worth a try. :)
 
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