Once Windows is installed, you should download the following essential drivers from the official ASUS support page: : Intel Chipset Device Software. Audio : Realtek High Definition Audio Driver. LAN : Realtek Gigabit LAN Driver.
If you're using a separate graphics card, install it into the PCIe 3.0/2.0 x16 slot. Secure the card with screws. asus h81m-k motherboard setup