[Tourbleshooting] System is not detecting Intel 82579V Network Adapter

https://imgur.com/8k8rVi5

Hello members,
My system’s Intel 82579V network adapter is giving slow speed problem. While trying to install latest drivers from Intel website PROWinx64.exe or Intel® Ethernet Adapter Complete Driver Pack, both the softwares are not detecting Intel Adapters in the system. So kindly assist, advance thanks!!