I have recently moved my computer from my home, to my new acomodation at university, from moving from my bedroom to the new place im staying, my computer has gone funny with sound, when i now plug my speakers in, only one will work and sound is very crackly/distorted. however when i plug the speakers into my phone both work fine and are clear. What could be the problem? also since the move, my some of my keyboard keys have stopped working could this be linked, i removed the dust from inside the tower before i moved and think this could be a reason for its faults but im not sure.