Hey I just bought the motherboard the other day and I haven't been able to get it to post. The LED error that it gives me is "15". The manual says that its because the northbridge boots faster. I've tried booting it with and without my gpus and I still get the same error. I've got a 1000 wat psu so I know its not that. Anyways one of the things that it does is boot up then about 5 seconds into the startup it shuts down and restarts. Still gets a "15" code at the bottom. Help I can't figure it out. I get no visuals btws.