Mine has done it for 2 years, just used to it now.
Happens on my P5Q Pro anytime after the BIOS voltage and clock settings have been touched, it's normal.
It's completely normal.
It does this to do some checks before loading back into the BIOS and into windows. Really useful when you are overclocking, as it will revert back to default if it doesnt post, without you having to do anything.![]()