why I was playing game, the pc just turned off. When I turned it on again, no output to monitor. It has the beep,but nothing on screen. When the pc bootting, I see some red Led appear on the motherboard. It has a red LED near the VGA. is it the vga has a problem coz i plug hdmi to the onboard,but nothing on screen too. After take out vga, hdmi onboard is working now. Is it VGA or vga slot? Thanks.