In the Gigabyte BIOS you need to activate a series of settings on different sections in order for KVM to be able to use hardware acceleration.
- M.I.T. -> Advanced Frequency Settings -> Advanced CPU Core Settings -> SVM Mode set to Enable
- Chipset -> IOMMU set to Enabled
Save settings and reboot.
Run the KVM check to see if the system is capable or running hardware accelerated virtualisation.
If you still fail the check review your BIOS/motherboard documentation to activate the correct setting.