I have a Vaio VGN S170B Sony laptop and it only starts up in either VGN mode or Safe mode. If regular startup is initiated the screen flickers then goes black with no warning, even before it gets to the Windows logo or sometimes just after it. I can hear the computer still running, the lights all flicker as if it was working normally, but there is no image on the monitor. I believe it might be the video card, but I think it's integrated into the motherboard. Is there any way for me to fix this problem without having to replace the whole bloody thing? Can any one help me figure this out?