Thanks for your effort Serg008, but unfortunalty no change. Flashed with included Flash Utility, went smooth. Rebooted, BIOS went back to F3, restart and F4 showed up but still a blinking cursor after POST when pressing F12. Without pressing F12 is starts Windows as usual. Tried already to remove some hardware. Should I try to reset CMOS to default with the TouchBIOS utility and then try again? Before I had the P67A-UD4-B2 and I never experienced similiar problems.
SLIC1 - FACS method SLIC2 - 0+2 method SLIC3 - OEM7 method So, for the original bios you have same problems? Wrote to Gigabyte's support - they will fix this bag.