After installing a new harddrive into my computer, I turned it on to see that the monitor will not display anything, if I plug in my other old harddrive again it will work perfectly fine, i've tried a 2 monitors and same result, i've tried plugging it into the cpu hdmi slot and both graphics cards slots ( have 2 gpu's) and neither will display anything, all help appreciated. (haven't been able to enter bios for a while, goes to a black screen after i press delete or f2 to enter the bios)