I have a MSI A78M E35 with and athlon x4 860k and a gpu however whenever I power up the system I get no display or sometimes I get a block of colour on the bottom of the screen or colour lines, I want to know what part I need to replace(if there is anything to replace) also I have read about people with my mobo online who have had the same problem and say it's to do with updating bios, is this the case for me?