Hello, I bought this graphic card, club 3D 6950 Coolstream, which was booting correctly. I tried to unlock 6970 shaders, and cannot put my hands back on original BIOS. I think I messed up things with AtiWinFlash, including bios 2. I already tried switch 1 & 2 for bios, and also tried techpowerup bios ..._1.rom found on database, which seemed original one. Nothing at all allowed me to boot on the GPU, I can only use my IGP. I flashed on windows, then gave a try to atiflash on dos boot disk too. On windows, my card is recognized as VGA standard. If i try to put catalyst drivers, i end up after several reboots at a login screen going black and blocking computer. card model number CGAX69548F motherboard : z77 ASRock pro 3 with UEFI win7 64 bits Additionaly it seemd that my PCI E 16x is also broken :/ Even if I always manipulate with SPU switched off and after a power-on call to draw remaining electricity. But i can still access it with PCI-e 4x To sum up, major problem is that I cannot boot on this GPU from start, and other one is that driver cannot be installed correctly on it.