Before we go any further, it is very important that you know that intel does not support integration which is when the original wireless adapter is replaced by another one. You cna check this link for further information on this matter: Intel® Wi-Fi Products — Regulatory Information Regarding Hardware Installation or Upgrade
We recommend that you contact your computer manufacturer in order to check if they have any customized updates for this adapter that might resolve the issue. Here you can find their contact information: Computer Manufacturer Support
On our best effort to assist you, you can try our solutions provided below and also check on this thread: Intel Centrino 6235 Bluetooth not detected by windows 7 as some users seemd to have found a solution. *Please understand that the solution found in this thread is not official from Intel and therefore, Intel has no responsibility if anything goes wrong in case you decide to use it.