# 4. Secure Boot

1. Find the **Secure Boot** setting in your BIOS menu. If possible, set it to **Disabled**. This option is usually in either the **Security** tab, the **Boot** tab, or the **Authentication** tab.
2. Save changes and exit. The PC reboots.
3. In some cases, you may need to change other settings in the firmware, such as enabling a Compatibility Support Module (CSM) to support legacy BIOS operating systems. To use a CSM, you may also need to reformat the hard drive using the Master Boot Record (MBR) format, and then reinstall Windows. For more info, see [Windows Setup: Installing using the MBR or GPT partition style](https://learn.microsoft.com/en-us/windows-hardware/manufacture/desktop/windows-setup-installing-using-the-mbr-or-gpt-partition-style?view=windows-11).

&#x20;**Turn off Fast Startup if it is active and restart your PC.**

1. Press Win + R to open Run.
2. Type control and click OK to open the Control Panel.
3. Go to System and Security and then click on Power Options.
4. In the left pane, click on Choose what the power buttons do.
5. Next, click the Change settings.
6. Under the Shutdown settings section, check the Turn on fast startup (recommended) option to turn on the feature.
7. Uncheck the Turn on fast startup option to turn it off.
8. Click Save changes to apply the changes.

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