Hi. One day I shutdown my laptop and came back to turn it on. There is always two lights that are on (these were on now) however usualy when I turn it on two more turn on however now only three lights were on when I turned the power on. Anyways the fan didnt turn on for a while so I try to turn the power on and after a while it finally turned on, however after it got to the windows screen it just shut off..! I dont know the exact model of my computer all I know is that it is a black toshiba. Anyways is there something wrong with my hardware, is there a program doing this? Help would be greatly appreciated.