Now back to if you got a picture on an external display. If you get a video output then you will know that it is a flaky video chip and that will have to be fixed.
Sometimes if a computer has a loose connection between the GPU (Graphical Processing Unit) and the motherboard it will result in no video or flaky video, so try pressing down on the keyboard while powering on and try see if you get video. If you are sure you did all of the above steps correctly, then shut off the computer and try pressing down on the keyboard while powering up the laptop and see if you get an image. If you don't get a picture on the external monitor make sure it is plugged in correctly and that you pressed the correct keys to have the output signal go to the external monitor. So connect your laptop to an external monitor and see if you get a picture (you might have to press the fn and one of the f1, f2, f3 etc.keys together to switch the output to an external display, If you get a picture on the external monitor you know it is not the motherboard, (whew, was getting scared already). The first thing I would advise to be done is to check your laptop with an external monitor to make sure that it is not the video chip that went bad. Now to go about solving the problem there are a few things to determine to see what the problem is.
Well the good news is that it could have been worse. Then one day you turn on your laptop computer and you're not sure, is it me or am I still sleeping? The screen on my laptop is not working. Ok, you're using your laptop normally and everything is working fine.
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