Thursday 5 January 2012

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How to Fix Vertical Lines on the Computer Screen



Unusual black lines on your computer monitor indicate a problem in one of three components; the monitor itself, the graphics card or the motherboard. A second monitor can help you narrow down the true source. If the vertical line also appears on the second monitor, the problem lies within the circuitry of your computer. A clean image on the second monitor indicates the display problems seen on your original monitor are due to a fault within that monitor itself.

Check Connections 
Computer monitor problems are sometimes caused by a simple loose or failing video cable. For desktop systems, check that the cable is connected securely and properly from the back of the monitor to the back of the computer, and that the graphics card is secure inside the tower. Check for signs of fraying or damage on the cable, and replace if you find any splits, exposed wiring or severe kinks that may interfere with proper communication between the monitor and computer. Laptop computers require disassemble to access the video cable, so consult your user or service guide for assistance.

LCD Failure 
LCD monitors can experience failure from external damage such as moisture collection and rough handling, or from internal problems such as burned out circuitry due to a power surge. Video problems such as lines, strange color changes and scrambled images are common symptoms of LCD failure. Depending on your computer, an experienced computer repair technician may be able to repair the problem, or you can simply replace the monitor or LCD screen.

Graphics Card Problems
The component responsible for translating the data and information from your computer into visual images is the graphics card, also known as a graphics chip in laptops. If this component fails, the images that appear on the screen can contain vertical or horizontal lines. Connecting a second monitor will show these lines as well. Desktop computers allow you the ease of simply replacing the graphics card, while laptops typically require the replacement of the entire motherboard due to their compact and space efficient nature.

System Board Problems 
The system board, or motherboard, is the nerve center of the computer, and controls all the various actions and processes your computer needs to operate. In some cases of vertical lines, the monitor and graphics card are both fine, but the motherboard itself is not communicating with either properly. Unfortunately, diagnosing a faulty motherboard is not easy, and usually only occurs when all other possible causes are eliminated.

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