so i made a new build with a fx 8350 in a asus sabertooth 990fx R2.0 mobo, when i try to access the bios the screen just turns black, ive been using the pc for a few weeks fine never went into bios till now, did i need to flash the bios to use this cpu and if so how as i dont have an old cpu to use to flash it,. also when i start the pc up a red light flashes on the mobo was just wondering if thats saying theres an error.