Hello everyone, I've had a problem with my MacBook Pro for two days now. In the past, the control button would sometimes get randomly "pressed", but not physically. This would make me unable to type properly and turn every left click into a right click. I dealt with it by pressing Control+Option+Command+Esc. I don't know what exactly that key combination does, but it was recommended by the guy who had this MacBook before me and it always worked. That is, until two days ago. I left my MacBook in Sleep Mode and when I got back, the control key was stuck. I restarted it, but still I could type nothing, not even my password. Fortunately, I was able to log in as a Guest User, which requires no password and from there I controlled my Mac via TeamViewer with my iPad (it allowed me to type normally). I managed to reinstall Mavericks, but much to my surprise, that did not fix the issue either. A while ago I noticed something interesting though: I turned Keyboard Viewer on and realised that whenever I pressed Command, the Control key would also appear pressed on Keyboard Viewer, even though it seemed physically intact. Also, when I put it in Sleep and wake it up again, I can click normally. However, if I press any other key after that, it goes in right click mode. Does anybody have any idea on what is going on and how it could be fixed? I have found some threads describing similar situations, but they didn't really help. Thanks in advance.