Default WiFi Turned off after reboot

Dear Forum Members
I need help regarding my Note 3 SM-N9005, every time I restart my phone the WiFi is turned off, when I watch the WiFi indicator in the Notification panel, it turns green then becomes grayed as if something turns it off after completing the boot
I tried to boot in safe mode & wifi kept on, the Question is how can I know which application is causing the problem?? & how to solve it
please help
thank you
Firmware Android 4.4.2
Baseband Version N9005XXUENC2