How Can I Connect Four LCD Panels to Make One Large Screen?


You can connect multiple monitors to your computer using a multiple output video card. This should be done with a desktop computer, because it is extremely difficult to upgrade a laptop's internal graphics card to do this. This option will also offer the best performance. Using a desktop computer, you just have to install a new, compatible graphics card and configure it in Windows. You may want to do this if you need to view several windows at the same time frequently.

Things You'll Need

  • Multiple output graphics card
  • Monitors
  • Desktop computer with unused expansion slot
  • Screwdriver
  • Purchase a multiple output video card that is compatible with your computer. Look in your computer's documentation to find the types of expansion slots that are unused. Make sure the card is compatible with your operating system and that your computer's power supply has a sufficient capacity for the card's requirements.

  • Shut down your computer and disconnect the power cord. Remove the side cover. This may be held in place by a clip or screws. Slide off the cover to expose the interior of the case.

  • Locate the expansion slots, which are located on the rear of the computer. If there is an existing graphics card in use in one of the slots, remove the video cable from the outside of the case. If the onboard graphics card was in use, skip to the next step. Unscrew the existing graphics card and carefully remove it from the computer.

  • Remove the new graphics card from its packaging. Locate the expansion slot it will be used with. The spacings on the slot will correspond with the connectors on the card, which insert into the slot. Press the card gently into the expansion slot until it is fully inserted. To prevent damage, do not force the card. Attach the screw to hold the card in place.

  • Attach any interior power cords to the card. This may or may not be necessary. Check the card's documentation to find out. These cords will be found on the computer's power supply.

  • Reattach the side cover to the computer, as well as the power cord. Attach the video cables to each of your monitors and the other ends to the outputs on the video card. A video cable splitter may have been included with your card. If this is the case, attach the splitter to the outputs on the card and then attach the monitor video cables to the outputs on the splitter.

  • Power on the computer and all of the monitors. Log on and open your Web browser. Go to the video card manufacturer's website. Download and install the most recently released drivers for the card.

  • Right-click your desktop. Click "Screen Resolution." Click "Detect" to make sure all of your monitors are detected.

  • Click the drop-down menu to the right of "Multiple Displays." Click "Extend These Displays." Click "Apply" at the bottom right of the window. Click "Keep Changes" in the window that appears.

  • Click and drag the monitors that are labeled by numbers at the top of the window to match their physical locations. Click "Identify" to show the number a monitor is identified with on its screen.

  • Click a monitor and then the drop-down menu to the right of "Resolution." Select the recommended resolution for each monitor, or find the one that looks best.

  • Click "OK" when you are done to save the changes. Click "Keep Changes" if this window with this option appears again. Your monitors and video card are now configured.

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