Save your chosen 4K image from the ASRock site, ensuring it is at least 3840x2160 pixels for maximum clarity.
Open your File Explorer and go to the folder where you saved the image. 3840x2160 ASRock > Wallpaper
Use a 4K video file or a GIF of the ASRock design within the app to set it as a live background. Would you prefer: A style (like Taichi)? A gaming/RGB style (like Phantom Gaming)? Let me know, and I can narrow down the best sources! ASRock > Wallpaper Save your chosen 4K image from the ASRock