08-04-2014, 09:03 PM
Just an update, I've added some more tests:
- I bought a new mainboard, AMD AM3+ with 990fx bchipset; to make sure it's not the Z87
- Switched the switch onboard to "2" to use the F70 bios that comes per default
- Switched back to "1" and tried to flash with reference hd7970 bios. This action nearly bricked the card as it was causes instant kernel reboots. So I flashed it back to F72 which is the latest version
- Installed a fresh Windows 7 (64 bit) and tried on windows
- Attached the crossfire bridges
- Removed the crossfire bridges
None of the above helped
- I bought a new mainboard, AMD AM3+ with 990fx bchipset; to make sure it's not the Z87
- Switched the switch onboard to "2" to use the F70 bios that comes per default
- Switched back to "1" and tried to flash with reference hd7970 bios. This action nearly bricked the card as it was causes instant kernel reboots. So I flashed it back to F72 which is the latest version
- Installed a fresh Windows 7 (64 bit) and tried on windows
- Attached the crossfire bridges
- Removed the crossfire bridges
None of the above helped