Hi. I'm at a dead end. My computer stopped showing on the screen (blue screen - no vga). I checked it on another monitor and didn't change anything. I replaced the cable and it didn't work. Then I replaced the video card and that didn't help. Then I replaced the motherboard, still nothing. Replaced the cpu. I have 4 sticks of ram. I tried one stick at a time, didn't work. I've unplugged both dvd drives and my card reader thinking that might be causing the issue but it didn't help. So what's next? Can the power supply go bad? Could it be the ram still. I've almost replaced the entire inside. It's very annoying. Thanks for anyone that can help. I really appreciate it.