How does MMF manages Joystick IDs ?

Okay, so I got this issue ever since I installed that wireless xbox360 controller for windows: My logitech controller wont be read as joystick for player 1 even when the xbox controller is unplugged and the drivers uninstalled and the computer restarted.

I got only my logitech controller plugged in ( that i ve been using for years and works perfectly fine for sure) and MMF wont find it when I try to play my game.
Only way around I ve found is to code MMF to search and use joystick ID2 when it cant find joystick ID1. But I dont want a work around, I'd like to know why this is happening and how I can get my controller to get back to its original Joystick ID1 for good !

I am not sure if it is really a MMF issue or something to do with this garbage xbox drivers. In any case, if some of you have had a similar problem or got an idea, maybe you could enlighten me !
Much thankz.