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Bad BIOS Flash on 780, need help unbricking

post #1 of 23
Thread Starter 
Hey guys, I am in need of some serious help.

First, while half asleep, I flashed the wrong BIOS to my new EVGA GT780 SC and now the card wont display a picture. Windows boots and PC Posts and I can hear windows load sound, however black screen.

I have another 780 that I have been trying to use to get this 780 repaired, however NVFlash does not list the borked 780 when both cards are installed.

Ive tried nvflash --list however only GPU0 shows and no others.

Ive tried the Blind Flash Method, but after it boots to the USB Boot Drive, it seems to just reboot again and back in to windows with a black screen.

Before I RMA the card (fortunately EVGA is willing to do it) I would like to see if anyone has any idea of what I can do do fix this.

Your helps is GREATLY appreciated, and I'm even willing to offer a reward to information leading to the arrest and capture of this BAD BIOS!
post #2 of 23
First, do you have intergrated gpu?

If you do, it`s very easy. Just remove the card. Plug the monitor to your cpu and boot to the bios. Set the option to ONLY use the internal GPU (iGFX on my board).
Then plug your graphic card (with power cord) in the computer, boot and now you should be able to flash it in windows with the proper BIOS.
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post #3 of 23
Thread Starter 
But the problem is that NVFlash doesnt even see the card when using nvflash --list Does that make sense? Its like the card isnt sending any signal at all to the mobo.
post #4 of 23
Do you only have the borked 780 and integrated gpu?
What change did you make with the custom bios? In my case the clock was too high.
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post #5 of 23
Thread Starter 
No, in my original post I stated that I have 2 GTX 780s, however when using "NVFlash --list" in windows, only the non broken 780 shows in the list in GPU(0).

This is when booting off the good GPU in PCIE slot 2, and the bad card in slot 1.
post #6 of 23
Try what I suggested, it worked for me.
Let us know what you changed in the BIOS... Because if you overvolted it too much you might have completely bricked your card.
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post #7 of 23
Thread Starter 
The card was never even over-volted. This was the initial BIOS flash that bricked the card. I had a bunch of bios in my folder and I accidentally flashed my EVGA SC with a non EVGA SC bios.

All I want to do is get it back to stock now.

Im confused on how to try your method when the card doesnt show up in the list of cards to flash. Can you elaborate a little more? I do have a boot drive setup on USB so I can do this from either DOS or Windows if need be, and I will try seeing if the card is recognized when the iGPU is set as the default graphics display output when I get home from work.
post #8 of 23
Thread Starter 
As for the BIOS, its the Skynet Non-Boost 941mhz bios, so if anything it was underclocked compared to the factory bios.
post #9 of 23
I will explain what I did.
I haven't checked if the card was detected or not. Once I booted to windows with my integrated GPU, I simply dragged the bios file on NVflash (not EZFLASH) and my card was back to stock BIOS after I rebooted when the process was done.

What I suggest is to remove EVERY cards. Set you iGPU as 1st priority. Boot to windows to be sure you did it right.
Put the BRICKED card back in with everything plugged BUT the monitor.
When you boot to windows simply flash the card like you would (if using NVflash) for EZflash I think you got one more step like telling which pci-e slot the card is in.
Then you go back in the BIOS and reset the GPU priority.
Edited by Just a nickname - 3/26/14 at 2:44pm
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Mushkin 1 TB SSD & Samsung F3 spinpoint 1 TB MCP655A + 2 x MCP320 + EK supreme copper Win10 Corsair K70 Lux 
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post #10 of 23
Thread Starter 
I dont think you are following when I say that the card is NOT recognized by NVflash (I never said anything about EZFlash)

Since NVFlash does not see the card, it will not run the flash utility stating that the GPU adapter is not present.

I appreciate your help, but like you said, you never checked to see if your card was detected, but I can assure you without a detected card, NVFlash doesnt know where to put the BIOS.

I know how to use NVFlash well, what I am unfamiliar with is how to force an eprom flash on a GPU that doesnt even show up.
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