After reading the articles about flashing Vega 56 into 64, I decided I wanted to try it. There wasn't a risk since card has dual bios and the 64 bios flashed onto my 56 just fine. My problem though comes from this. I followed the ATIFlash guide and used GPU-Z to export the old bios. The old bios was only 64KB instead of 256!!! Now that my testing on the new 64 bios didn't improve performance, I flashed back using the GPU-Z bios. Well... since it was only 64KB, the primary bios is now bricked and card won't post. Edit: Just before flashing back to stock, an update became available for GPU-Z and I updated. This showed more results than the previous and I did a test export and the file was indeed 256KB. Fixing the original bios seems to be an issue though. I need to know if I can boot into windows on the secondary bios then move the switch over to the first bios and flash without getting screwed all while powered on. I tried creating a bootable flash drive with the version for ATIFlash but before even flashing the 64 bios, this method failed as that version of ATIFlash doesn't work in DOS and the one that does won't work with vega. I need to get the latest version of ATIFlash (which supports vega) booted onto flash drive so I can recover using the steps mentioned in the forums. Edit: If this happens to you (which it shouldn't now, just make sure you're running latest version of GPU-Z) follow the guide below: If your flash failed, after you restart your pc, it will not post. Turn PC off at this point and flip the bios switch to the second position (away from PCI bracket) Turn PC back on and it should post. You will get some weird graphical bugs initially but they go away after a few seconds on the desktop. download a stock 56 bios https://www.techpowerup.com/vgabios/194443/amd-rxvega56-8176-170730. The secondary or powersave bios on Vega seems to be write protected so you only need the link above. Download the latest version of ATIFlash as it supports Vega. (you should already have it since you failed your flash already Put ATIFlash in a folder (I used the desktop) and put your backup bios file in that directory to make it easy. Flip bios switch back to the corrupted one while machine still on Open CMD as administrator and navigate to the root of your ATIFlash directory (cd C:\Users\*insertusernamehere*\Desktop\*insertfoldernamehere*) Type in atiflash.exe -f -p 0 xxx.rom (substitute "0" with whatever device number your GPU is and substitute xxx with your .rom name) Press enter and pray to gaben Should take about 20 seconds and you will get some info on the screen saying old ID, new ID etc. Just sit and wait till the prompt displays restart pc for bios flash to take effect. Restart PC and you have successfully unbricked your Vega 56!