Hello,
MB: ASUS P8Z77-V PRO
NIC: Intel 82579V
Steps I did wrong:
1) Flashed eeprom with wrong image file from 82574L adapter. 82579V(my) -> 82574L(wrong)
2) Havent done backup
Result: My controller is shown as 82574L and doesnt work.
Fortunately I found one good man with same MB who did...