I built my PC back in about November. I was really pleased with it, I was most excited to have a more quiet computer because I was water cooling it. Recently it makes a loud buzzing noise that I can hear from the other room. I have also noticed my temps are a bit higher than normal. It is constant and it fixes sometimes if I lightly hit the top of my computer. It also fixes if I set my computer on its side. I'm assuming that this means I have an air bubble. I'm wondering if that is correct and how should I go about fixing it?