I have try contacting Biostar for support but they have not responded but I will give it one more try. I when I ebay and newegg for a Z77 I would be spend atleast $80 which at that price I mite as well sell the i5-3570k and the motherboard to get a newer CPU. If I do that which CPU should I get the i5-4690k or the i5-6600k?