The audio and LAN on the X7V124 are almost certainly Realtek. Realtek provides free, universal drivers for their chips:
Download directly from Realtek’s official site (not third-party mirrors). x7v124 motherboard drivers free
Command-line/advanced:
Websites like PCI Database (pcidatabase.com) can help you identify unknown devices. Once you have the Vendor ID (VEN) and Device ID (DEV) from Device Manager, you can search for the exact driver. Then download from the original vendor’s website, not from the driver database itself. The audio and LAN on the X7V124 are almost certainly Realtek