Viglen vig830s - 4. In the CSM (Compatibility Support Module) change following settings for Windows 8;8.1.; Figure 51: Compatibility Support Module; 5. Navigate to Secure Boot from within the Boot sub menu.; 6. Change OS Type to Windows UEFI.

V1.0 Vig830S Motherboard Manual
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4. In the CSM (Compatibility Support Module) change following settings for Windows 8/8.1.
Launch CSM [Enabled]
Boot Device Control [UEFI Only]
Boot from Network Devices [UEFI drivers first]
Boot from Storage Devices [UEFI drivers first]
Boot from PCI-E/PCI Expansion Devices [UEFI drivers first]
Figure 51: Compatibility Support Module
When these settings have been changed, press <Esc> or the Back Button to go back to the Boot Sub
Menu to enable Windows UEFI for secure boot.
5. Navigate to Secure Boot from within the Boot sub menu.
6. Change OS Type to Windows UEFI.
Figure 52: Secure Boot Menu
7. Select Key Management.
8. Select Install default Secure Boot keys and select Yes to proceed.