I decided to replace card for AX3000HMW - the chinese version of AX200 for mini PCI-e. When I installed this card it suprisly me - bluetooth works but WiFI don´t. In device manager is showed code 10 as on attached screenshot. I was checking both cards - 7260 and AX200 in Dell Latitude E6520. Any problems with both cards - BT and WiFI works perfectly. I suspected the OS registry or other is failed. At the next step I replaced HDD from Dell to my AH531/GFO. Unfortunately the code 10 happend.