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Take out battery from laptop and disconnect power cable. Keep the power button pressed for 30 seconds and then plug the power cable. This will remove static charge from laptop and should resolve the display issue,
If you can see the vertical lines during POST, try to check the vertical lines in BIOS. If the vertical lines are there in BIOS, the only thing you can do is to replace your LCD screen.
The vertical line is a bad pixel sensor at the edge of the screen, your screen has hundreds of vertical and horizonal pixel sensors. This is an indicator that the screen is going out and need replacing.
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