Displays Blank Screen after Installing a New Video Card in Windows 8

By | January 7, 2014

Does not start or displays a blank screen after installing a new video card

If Secure Boot does not recognize a video that you install, you may experience problems starting the computer, or there might be no video card in windows 8. First remove the new video card and restore the computer to its original configuration so that the computer display works. Then disable Secure Boot and enable Legacy Boot. Once Legacy Boot is enabled, you can install the new video card.

Step 1: Restore the computer to its original configuration

If your computer came with on-board video only and you installed a new video card, remove the video card. If your computer came with a video card installed and you replaced the original card with a new card, remove the new card. Replace the original card in the computer.

Step 2: Disable Secure Boot and enable Legacy Boot

Follow these steps to disable Secure Boot and enable Legacy Boot:
  1. Turn off the computer.
  2. Turn on the computer and immediately press the F10 key repeatedly, about once every second, until the Computer Setup Utility opens.
  3. Use the left and right arrow keys to select the Security menu, then use the up and down arrow keys to select Secure Boot Configuration , and then press Enter .
    Security menu

    Image of Security menu

  4. The Secure Boot Configuration warning displays. Press F10 to continue.
    Secure Boot Configuration

    Image of Secure Boot Configuration warning screen

  5. Use the up and down arrow keys to select Secure Boot , then use the left and right arrow keys to change the setting to Disable .
    Secure Boot Configuration

    Image of Secure Boot Configuration

  6. Use the up and down arrow keys to select Legacy Support , then use the left and right arrow keys to change the setting to Enable .
  7. Press F10 to accept the changes.
  8. Press F10 again, then press Enter twice to restart the computer.
     Save Changes and Exit

    Image of File Menu

  9. As soon as the computer starts, a message appears indicating that the boot mode has changed.
    Boot mode change message

    Boot mode change message

  10. Type the four-digit code shown in the message, then press Enter to confirm the change.
    NOTE:No text field displays for the code. This is expected behavior. When you type the numbers, the code is logged without a text field.
    The computer starts Windows 8.

Step 3: Install the new video card

Turn off the computer and install the desired video card in the computer. Make sure the card is compatible with the computer.