Dell Alienware m15 R3, Service Manual, Page: 72 / 81

Option Description
Secure Boot Enables or disables the Secure Boot Feature.
Choose one of the options:
•
Secure Boot Enable
• Secure Boot Disable
Default: Enabled
Legacy Option ROMs Enables or disables the Legacy Option ROMs.
Default: Disabled
Attempt Legacy Boot Enables or disables Attempt Legacy Boot.
Default: Disabled
Boot Option Priorities Displays the boot sequence.
Boot Option #1 Displays the available first boot option.
Boot Option #2 Displays the available second boot option.
Boot Option #3 Displays the available third boot option.
Updating the BIOS in Windows
Prerequisites
It is recommended to update your BIOS (System Setup), when you replace the system board or if an update is available. For laptops,
ensure that your computer battery is fully charged and connected to a power outlet.
About this task
NOTE: If BitLocker is enabled, it must be suspended prior to updating the system BIOS, and then re-enabled after the
BIOS update is completed.
Steps
1. Restart the computer.
2. Go to Dell.com/support.
• Enter the Service Tag or Express Service Code and click Submit.
• Click Detect Product and follow the instructions on screen.
3. If you are unable to detect or find the Service Tag, click Choose from all products.
4. Choose the Products category from the list.
NOTE: Choose the appropriate category to reach the product page
5. Select your computer model and the Product Support page of your computer appears.
6. Click Get drivers and click Drivers and Downloads.
The Drivers and Downloads section opens.
7. Click Find it myself.
8. Click BIOS to view the BIOS versions.
9. Identify the latest BIOS file and click Download.
10. Select your preferred download method in the Please select your download method below window, click Download File.
The File Download window appears.
11. Click Save to save the file on your computer.
12. Click Run to install the updated BIOS settings on your computer.
Follow the instructions on the screen.
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