I have working Pc with i5 4670k on Asus maximus vi hero mobo. I obtained an i7 4790k fitted to Pc code 00. I have latest bios 1603 and Asus/ Intel drivers up to date. Was suggested on the forum i7 must be faulty, returned it to Intel under warranty got a replacement fitted now I getting code b2. There must be something I can do to get i7 to boot.