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Cannot Start Desktop Computer From a Bootable CD or DVD (Windows 8)

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This document applies to HP desktop computers that shipped with Windows 8 installed.
HP computers that come with Windows 8 installed use an AMI BIOS version 8 that is compatible with UEFI (Unified Extensible Firmware Interface). This version of the BIOS includes Secure Boot which is enabled by default. Having Secure Boot enabled in the BIOS prevents legacy boot devices from starting your computer and includes bootable CDs and DVDs.
To start your computer from a valid bootable disc, such as an HP recovery disc, disable Secure Boot and enable Legacy Support in the BIOS, and then use the Boot Menu to select the CD/DVD drive as the boot device. Use the steps in this document to disable Secure Boot and enable Legacy Boot Sources to start your computer using bootable discs.

Step 1: Disable Secure Boot and enable Legacy Boot

Follow these steps to disable Secure Boot in the BIOS.
  1. Turn on the computer and immediately press the F10 key repeatedly, about once every second, until the Computer Setup Utility opens.
  2. Use the right arrow key to choose the Security menu, use the down arrow key to select Secure Boot Configuration, then press Enter.
    Figure 1: Security menu
    Security menu
  3. Before you can use this menu, a warning appears. Press F10 to continue to the Secure Boot Configuration menu.
    Figure 2: Secure boot warning
    Secure boot warning
    The Secure Boot Configuration menu opens.
    Figure 3: Secure Boot Configuration menu
    Secure Boot Configuration menu
  4. Use the down arrow key to select Secure Boot, then use the right arrow key to modify the setting to Disable.
  5. Use the down arrow key to select Legacy Support, then use the right arrow key to modify the setting to Enable.
  6. Press F10 to accept the changes.
  7. Use the left arrow key to select the File menu, use the down arrow key to select Save Changes and Exit, then press Enter to select Yes.
  8. The Computer Setup Utility closes and the computer restarts. When the computer has restarted, use the power button to turn the computer off.

Step 2: Select the CD/DVD drive as the boot device

Follow these steps to select the CD/DVD drive as the boot device in the Boot Menu.
  1. Press the power button to turn the computer on. As soon as the computer starts, a message appears indicating that the boot mode has changed.
    Figure 4: Boot mode change message
    Boot mode change message
  2. 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.
  3. Press the power button to turn off the computer, wait a few seconds, then turn on the computer and immediately press the Escape key repeatedly, about once every second, until the Startup menu opens.
  4. Press F9 to open the Boot Menu.
    Figure 5: Boot Menu
    Boot Menu
  5. Use the down arrow key to select the SATA device under the ATAPI CD/DVD drive heading, then press Enter to select the CD/DVD drive as the boot device.
    The computer starts Windows 8.
  6. Insert the bootable CD or DVD into the CD/DVD drive.
  7. Press the power button to turn the computer off and wait about 5 seconds.
  8. Press the power button again to turn the computer on.
    The computer starts from the CD or DVD.

Step 3: Restore default BIOS settings

When you have finished using your bootable CD or DVD, restore the default BIOS settings. This enables Secure Boot and sets the Windows Boot Manager as the primary boot device.
  1. Turn on the computer and immediately press the F10 key repeatedly, about once every second, until the Computer Setup Utility opens.
  2. Under the File menu, use the down arrow key to select Apply Defaults and Exit, then press Enter.
    The computer starts Windows with the default settings.

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