The error you're encountering (VAN9003) indicates that Secure Boot needs to be enabled on your system. To fix this, follow these steps:
Restart your PC and enter the BIOS/UEFI settings. This is usually done by pressing a key like F2, F10, DEL, or ESC during boot-up. Check your motherboard's manual for the exact key.
Locate the Secure Boot option within the BIOS/UEFI menu. This is often found under the “Security,” “Boot,” or “Authentication” tab.
Enable Secure Boot by selecting the option and changing it from Disabled to Enabled.
Save and exit the BIOS/UEFI settings. Your computer will restart.
Important: Ensure your system is using UEFI mode, not Legacy BIOS (MBR). Enabling Secure Boot with Legacy BIOS can make Windows unbootable. If unsure, refer to your motherboard’s manual or seek professional assistance.