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Look at the LCD screen very closely and check if you can see a faint image on the screen. It's possible that the LCD lid close switch stuck in the "closed" position and the back-light stays off even when you open the LCD screen or turn on the laptop. The switch turns off the back-light when you close the LCD display to save the laptop battery power.
If no luck, try to remove battery and drain the power, then replace battery and turn on.
If that didn't fix it then there are 3 things that could have gone wrong:
1. Video cable connection from inverter to LCD got loose. To check this, follow instructions from step 3 on how to open the LCD and check if cable is fitted properly.
2. The video inverter is faulty The screen inverter failure is very similar to the back-light lamp failure. In both cases the screen gets very dark and the image on the screen becomes very faint, barely visible under a bright light. If it's still under warranty, take it for a replacement. You can replace this otherwise - you can find the inverter under the screen, follow the procedure described at point 3 to open up the screen.
3. The LCD monitor is faulty If it works on an external monitor most likely the LCD is faulty and needs replacement. If it's still under warranty, take it for a replacement. If not, you can do it yourself, it's pretty easy. Remove the rubber covers on the side of the screen, unscrew the screws take the plastic cover off, disconnect the video inverter and put in the new LCD after you connect the video inverter to it.
Hello!
First things first!
Usually these problems, its related to monitor or monitor drivers, check the cable conection to the back of monitor, if is HDMI or analog, that is well conected!
other may be bad power cap, or damage, or high freq. static in lines.
hope these hints, helps
Carl
Usually every laptop has the option of adjusting the screen brightness as you would want the screen to be pretty dim when running on battery to conserve battery life. First thing to check would be just that.
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