I bought 4GB of RAM and installed it myself. It works fine but now the bluetooth doesnt work. I cant find my mouse, keyboard or cellphone, and I cant even find the mac mini on my cell.. what should I do? I just followed a youtube guide so I dont exactly know what to look for if I open it again. also, are there any chance blietooth is just disabled on the mac mini so all I gotta do is activate it again?