I have a MSI 6950 Tween Frozr II (2GB). I upgraded from 6950 to 6970 with WinFlash successfully but on reboot the screen stays black and the post fails. The situation is this: - Putting a 8800GT in the first pci-e and 6950 in the second pci-e winfalsh and cpu-z sees the 6950 but if I try to use WinFlash to put the original bios or bios with MSI CAYMAN PRO V246 says "Subsystem ID Mismatch" - If with WinFlash I load the firmware of 6970 or 6950 (with HAMILTON CAYMAN PRO), the bios is written without problems but the card does not work - Using DOS+Atiwinflash with the two cards I receive the error "adapter not found" with each command. Which is correct the bios for a MSI 6950 Tween Frozr II (2GB)? Why I receive "Subsystem ID Mismatch" using the original firmware? How can I solve "Subsystem ID Mismatch" with WinFlash or "adapter not found" in DOS? Are my 6950 dead? Please help me you are my only hope.