My powermac g5 dual 2.0 has "cold starts". In the morning it takes as many as 10 tries before I get a successful start. Pretty much after that if I shut it down it will start the first time for the day. I was thinking maybe a video problem cause sometimes it seems to start and I can eject the tray I just have no screen. I am using an apple cinema screen. It has a flashing light on it that signifies the backlamp is going out however it has done this for years. I thought maybe a ram problem as well so I reset the pram to no avail. Any light? I hate the repeated force quits to get it to start everyday.