sometimes when I cold boot my A77 fatality board will throw the debug code "15" it will then power down then reboot like everything is fine. On reboot no problems report and it goes past the bios screen and into windows fine. its says the code is for " pre memory north bridge initialization is started". the bios is 1.60 and the processor is oc'd to 4.6 @1.35v the processor never goes above 55 gaming or any other use for that matter. Has anyone else had this problem or knows what " pre memory north bridge initialization is started" means?