Black Screen when starting the device
I have an almost 3 years old macbook pro. Since two months the screen stays black when starting the computer. I know the computer is running because I hear the sound and I can see my desktop when using an "external" display.
Additionally I know that the screen actually does work because when I start the computer I can see a white screen and then the apple sign...afterwards it turns black.
I've brought it to the mac store but they didn't find out what the problem is (probably wanted to sell a new one to me, but I don't have the money at the moment). Once they just mentioned something about a temperature sensor...