i encounter the same problem. when i turned on my ASUS A42JR, power LED is on, caplock LED on. the CD drive run when starting up and able to eject. the computer heat up as usual but the fan is not running. Before having black screen, I encounter some problem like vertical lines on screen and popup at task bar mentioning warning graphic card crash and solved/ recovered. Then the next time I open my computer, it couldn’t turn on anymore. I tried hooking up to external display, removing HDD, removing memory card, booting with external power only, booting with batt and booting with external power and batt but still couldn’t work. Kindly advise me how can I solve it and what is the problem. Thanks