I really need some help. My MacBook (Late 2008) was acting up, (the right side of the Menu Bar wasn't responding) today, so I tried to log out of my account, but it got stuck on the blue screen before the login page. I then pushed the power button until it turned off, and turned it on again. However, when I logged back in, my bluetooth was completely out of my menu bar! I checked in system preferences to get it back, but it was gone there, too! So I went to system profiler, and it was still missing. Please help!