Thank you for the post. Please help provide further info to check on this:
1) What is the model of your system?
2) What is the driver version ?
3) Where did you download the driver? from system vendor or Intel website?
Good Morning, the mother card is dh61ww, the driver version is 4/15/2014, 19.1, is under the Intel Download Center and the operating system is Windows 8.1 Enterprise, the problem we have is that the same network card sometimes grabs two different driver models when grasping Intel 82579V sails and works well when sailing grabs 825791LM not give scan for hardware changes after that changes if you navigate to and 82579V