Secure Boot (Windows 8) PrintPrint Share Feedback Using Secure Boot on a desktop computer Using Secure Boot on a notebook computer Frequently Asked Questions about Secure Boot Troubleshooting problems with Secure Boot This document pertains to HP and Compaq PCs with Windows 8 and Secure Boot. Secure Boot Configuration is a new feature of the Unified Extensible Firmware Interface (UEFI) in BIOS 8 that helps a computer resist attacks and infection from malware. When your computer was manufactured, UEFI created a list of keys that identify trusted hardware, firmware, and operating system loader code. It also created a list of keys to identify known malware. When Secure Boot is enabled, the computer blocks potential threats before they can attack or infect the computer. For example, Secure Boot can prevent your computer from starting from illegally copied CDs or DVDs that could harm the computer. Secure Boot does not lock out valid recovery discs or Windows discs. You may have to disable Secure Boot in order to use hardware (such as older video cards) that Secure Boot does not recognize, or to boot from a CD or DVD that is not recognized. If Secure Boot does not recognize hardware, Windows does not use the hardware when it boots up, and you may experience problems starting the computer. If Secure Boot does not recognize a video card, the computer may have a blank display. For more information, see the Troubleshooting section. System requirements for using Secure Boot All HP and Compaq computers that were manufactured with Windows 8 can use Secure Boot. Secure Boot is enabled by default on these computers. If you upgrade a computer manufactured with Windows 7 or earlier to Windows 8, you can use Secure Boot only if and AMI BIOS version 8 that is compatible with UEFI (Unified Extensible Firmware Interface) is available for the computer. NOTE:HP and Compaq Notebook PCs that were manufactured with Windows 7 or earlier may have an available BIOS update that allows the use of Secure Boot. For more information, see Updating the BIOS . NOTE:HP and Compaq Desktop PCs that were manufactured with Windows 7 or earlier do not have a BIOS version that allows the use of Secure Boot and one will not be made available for these computers. Using Secure Boot on a desktop computer The BIOS on a desktop computer is different from the BIOS on a notebook computer. Use the instructions in this section to enable or disable Secure Boot on your desktop computer. Enabling Secure Boot Secure Boot is enabled by default on computers that were manufactured with Windows 8. If Secure Boot has been disabled, follow these steps to enable it: Turn off the computer. Turn on the computer and immediately press the F10 key repeatedly, about once every second, until the Computer Setup Utility opens. Use the left and right arrow keys to select the Security menu. Figure 1: Security menu Image of Security menu Use the up and down arrow keys to select Secure Boot Configuration , and then press Enter . The Secure Boot Configuration warning displays. Press F10 to continue. Figure 2: Secure Boot Configuration Image of Secure Boot Configuration warning screen Use the left and right arrow keys to disable Legacy Support if it is enabled. Figure 3: Secure Boot Configuration Image of Secure Boot Configuration Use the up and down arrow keys to select Secure Boot , then use the left and right arrow keys to enable it. Press F10 to accept the changes. Press F10 again, then press Enter twice to restart the computer with Secure Boot enabled. Figure 4: Save Changes and Exit Image of File Menu Disabling Secure Boot You may want to disable Secure Boot in order to install new hardware or boot from a CD or DVD. Follow these steps to disable Secure Boot: Turn off the computer. Turn on the computer and immediately press the F10 key repeatedly, about once every second, until the Computer Setup Utility opens. 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 . Figure 5: Security menu Image of Security menu The Secure Boot Configuration warning displays. Press F10 to continue. Figure 6: Secure Boot Configuration Image of Secure Boot Configuration warning screen 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 . Figure 7: Secure Boot Configuration Image of Secure Boot Configuration 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 . Press F10 to accept the changes. Press F10 again, then press Enter twice to restart the computer. Figure 8: Save Changes and Exit Image of File Menu As soon as the computer starts, a message appears indicating that the boot mode has changed. Figure 9: Boot mode change message Boot mode change message 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. Back to top Using Secure Boot on a notebook computer Most HP notebook computers use the Insyde BIOS. Use the instructions in this section to enable or disable Secure Boot on your notebook computer. Enabling Secure Boot Secure Boot is enabled by default on computers that were manufactured with Windows 8. If Secure Boot has been disabled or if you are enabling a Notebook PC that was upgraded to Windows 8, follow these steps to enable it: Turn off the computer. Immediately press the Escape key repeatedly, about once every second, until the Startup Menu opens. Figure 10: Startup Menu Illustration: Startup Menu Use the right arrow key to choose the System Configuration menu, use the down arrow key to select Boot Options , then press Enter . Figure 11: System Configuration menu System Configuration menu Figure 12: Boot Options menu Boot Options menu Use the down arrow key to select Secure Boot , press the Enter key, then use the down arrow key to modify the setting to Enabled . Figure 13: Select Enabled Select Enabled Press Enter to save the change. 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 . The Computer Setup Utility closes and the computer restarts. Disabling Secure Boot You may want to disable Secure Boot in order to install new hardware or boot from a CD or DVD. Follow these steps to disable Secure Boot: Turn off the computer. Immediately press the Escape key repeatedly, about once every second, until the Startup Menu opens. Figure 14: Startup Menu Illustration: Startup Menu Use the right arrow key to choose the System Configuration menu, use the down arrow key to select Boot Options , then press Enter . Figure 15: System Configuration menu System Configuration menu Figure 16: Boot Options menu Boot Options menu Use the down arrow key to select Secure Boot , press the Enter key, then use the down arrow key to modify the setting to Disabled . Figure 17: Select Disabled Select Disabled Press Enter to save the change. 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 . The Computer Setup Utility closes and the computer restarts. When the computer has restarted, the Operating System Boot Mode Change screen appears, prompting you to confirm the Boot Options change. Type the code shown on the screen, then press Enter to confirm the change and continue to Windows. Back to top Frequently Asked Questions about Secure Boot Click each question to find the answer to a frequently asked question about Secure Boot. Show all | Hide all show How does Secure Boot help protect my computer? show Is my computer at risk if I disable Secure Boot? show My computer did not come with Windows 8. Can I still use Secure Boot? Back to top Troubleshooting problems with Secure Boot The following sections provide information for resolving issues with Secure Boot. Click each issue to see its solution. show The computer does not start or displays a blank screen after installing a new video card show The computer displays a blue screen or BIOS error message after installing new hardware hide I cannot boot from a CD or DVD (such as an HP Recovery disc) when Secure Boot is enabled HP computers that come with Windows 8 installed have Secure Boot enabled by default. Having Secure Boot enabled prevents legacy boot devices from starting your computer, including 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. Step 1: Disable Secure Boot and enable Legacy Boot Follow these steps to disable Secure Boot and enable Legacy Boot: Turn off the computer. Turn on the computer and immediately press the F10 key repeatedly, about once every second, until the Computer Setup Utility opens. 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 . Figure 28: Security menu Image of Security menu The Secure Boot Configuration warning displays. Press F10 to continue. Figure 29: Secure Boot Configuration Image of Secure Boot Configuration warning screen 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 . Figure 30: Secure Boot Configuration Image of Secure Boot Configuration 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 . Press F10 to accept the changes. Press F10 again, then press Enter twice to restart the computer. Figure 31: Save Changes and Exit Image of File Menu 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. 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 32: Boot mode change message Boot mode change message 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. 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. Press F9 to open the Boot Menu. Figure 33: Boot Menu Boot Menu 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. Insert the bootable CD or DVD into the CD/DVD drive. Press the power button to turn the computer off and wait about 5 seconds. Press the power button again to turn the computer on. The computer starts from the CD or DVD. Back to top
Posted on: Sun, 18 Aug 2013 00:05:48 +0000
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