Laptop VPCCW21FX- I was just given this laptop with a cracked screen. When i powered up the laptop the upper left corner had some color display. I removed the lcd screen and later powered up the laptop using an external display....Here is the issue, i get only a black screen on the external, i have tried the fn-f7 to toggle between displays but get only black screen the power is on,the HD lites up for 3 sec and the fan is on. Is it possible that the lid close switch (wherever that is) is not working properly? what next?