Bricked GPu/ What can I do now?

[cRsFisA]

So I've done the wrong things with PolarisBios Editor for my RX 480 and now my pc won't boot with it.

I wanted to boot with the integrated graphics and just flash the normal bios for it but my Ryzen 5 2600 doesn't have integrated graphics, so I've tried booting with 2 GPU's : an old AMD 6570 and my bricked RX 480. My pc will start but I don't see anything on display. The HDMI is connected to the HD 6570.

Motherboard: Gigabyte DS3H B450M.

Why can't I boot with the 6570 just so I can flash the normal bios for my RX 480?

Is there a setting in the bios that I need to change in order for me to do it?

Note: I've already updated my mobo bios to the latest version.

[Gastarbeiter]

Does your RX480 have dual bios? If so, use the bios switch and try again. 

[cRsFisA]

2 minutes ago, Gastarbeiter said:

Does your RX480 have dual bios? If so, use the bios switch and try again. 

I don't think it has dual bios. It's an MSI RX 480 4GB Gaming X

[IntMD]

You might need to enable legacy bios/similar instead of using UEFI for the 6570 from what I recall, as I think it came around before that was around and so is incompatible.

[cRsFisA]

24 minutes ago, IntMD said:

You might need to enable legacy bios/similar instead of using UEFI for the 6570 from what I recall, as I think it came around before that was around and so is incompatible.

I've tried multiple settings about this but it still doesn't work..

[Kilrah]

Does the 6570 work if it's on its own, i.e. you take the 480 out of the system?

[cRsFisA]

13 minutes ago, Kilrah said:

Does the 6570 work if it's on its own, i.e. you take the 480 out of the system?

The 6570 works on its own perfectly fine. Even if I let the RX 480 in but without the 8 PIN it's still works. With the 8 PIN in my pc boots but I get no image on the monitor.

[cRsFisA]

4 minutes ago, djnjd09 said:

Have you tried installing another graphics card? You cannot be assured it graphics card. Maybe you could flash the UEFI. That means your UEFI (Or BIOS) will be reset (Depends on the company). Another thing you could do is reset all the settings to default (On UEFI or BIOS) (But from what your saying is that you cant access it). 

 

P.S. Sorry if i wasn't that much of a help. Its just no-one was recommending this kind of software stuff.

I've tried that already. Still no effect. But thanks for the response!

[Levent]

You might be able to flash your RX480 if you can boot using HD6570, this exactly why I never suggest anyone without proper recovery tools to do a BIOS mod on anything. If you cant get it to boot with 2 gpus installed, then you might test your luck a EEPROM programmer (mind you that you will need to identify your BIOS chip, then able to find correct bios to flash to it.)

[Kilrah]

36 minutes ago, cRsFisA said:

The 6570 works on its own perfectly fine. Even if I let the RX 480 in but without the 8 PIN it's still works. With the 8 PIN in my pc boots but I get no image on the monitor.

Then most likely the BIOS on the 480 is functional enough to say "I'm here, use me!" but not enough to actually be able to output a picture.

 

Also think you won't have much choice but to reflash the chip directly with programming tools.

[Sat1600]

https://forum.ethereum.org/discussion/9443/bricked-your-rx-480-due-to-bad-flash

[cRsFisA]

Ended up fixing this way:

I've connected my HD 6570 in the first PCIe slot and my RX 480 in the second BUT without the 8 pin connector

Then when I booted up to Windows I've started to slowly introduce the 8 pin connector. I've managed to add like half of the connector in my RX 480 before my fans started to spin.

After that I've quickly entered in Device Manager -> Display Adapters -> Search for changes and saw "Microsoft Basic Adapter". After that I've gone into Windows Update and got my AMD drivers.

Then I was finally able to start atiflash and change the bios for my RX 480 to the correct one.

This fix is really weird,I know. And I'm sorry if this is kinda blurry for you because of my typing, English is not my first language but I hope you got the message!

Thank you all for the responses and be safe