I've been trying to fix this for quite a while but no luck yet. My Toshiba turns on and the fan stays running but there is just a black screen. I tried hooking it up to an external monitor but no luck. I've tried the hold power button for 60 sec but it seems that I haven't been able to figure out what the problem is. I was considering that the problem may be the software but I can't take a look at what exactly is going on since the external monitor is not able to pick up a signal from the Toshiba. Any help would be greatly appreciated!