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White screen appears at start up - Computers & Internet

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A laptop suffering from a blank screen can fully impede all computer productivity, but fortunately there are a number of common problems that you can swiftly troubleshoot for in your own home, even if you have no prior computer troubleshooting experience. The power adapter, monitor brightness settings, inverter cable or otherwise may all be possible causes for your screen's problems, but all can be repaired with only a Phillips screwdriver and a potential replacement screen.

Check the power adapter of the laptop and ensure that it is still properly plugged into the back of the machine. Check the monitor brightness settings for your screen. There are dedicated monitor brightness keys on the keyboard, typically located just above the numeric keys. If the brightness has accidentally been turned all the way down, this will result in a screen that appears completely dark or blank. Turn the brightness up. Open up your display to check on the backlight's functioning. Remove the screws that run around the bezel, or perimeter, of your laptop's screen. Use a Phillips screwdriver. Pull the bezel carefully off the display, starting at one corner and working around the bezel until it is completely detached. Find the inverter board, which will now be visible with the bezel removed. It lies at the bottom of the screen. A black inverter cable connects into this board via a connector that lies atop the board. This cable is instrumental to the operation of the screen's backlight, so if the cable has come loose, then the backlight will fail to function and the screen will be dark and blank. Reconnect the inverter cable into the connector by inserting it and then snapping the connector down into the flat, "locked" position, which will put it parallel to the inverter board. Consider full replacement of the screen if the inverter cable fix does not restore the screen's proper operating state. Ensure the inverter cable is disconnected, then remove the metal brackets on either side of the screen. These brackets are held in place with two screws that must be removed with your Phillips screwdriver. Pull the laptop's screen slowly up and out. Slide in the replacement screen, then restore the screen brackets and reconnect the inverter cable. Slide the bezel back into place over the display and replace the bezel screws. Hope this helps


Posted on Dec 10, 2012


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