I start up my computer and nothing turns on ( mouse,keyboard,monitor) but if I turn the tower on and off it finally boots up and says your system has failed to boot several time ...will continue to boot in 321... Then even then sometimes as it's ok the starting windows screen it freezes then I have to go through the whole thing again, other times it has no problem what wrong with it?This is a custom built with a Asrock mb and hyper x (2x8gb) ram and AMD A-10 5600 black edition processor with intigrded graphics and a western digital 1TB hard drive and windows 7 ultamate