My PC is 4 years old, Windows 7 with the good graphics card as it was sold as a gaming machine and now used for games/watching videos/the internet.
Now for unknown reasons the monitor has suddenly started to make terrible sound frequently. The sound rises and falls and sometimes it stops and again the process gets repeated.
Now it has also started to make noise when its boots up. The static sound can also be seen in my volume control area. Whenever it makes a sound, the green bar jumps a little bit. When I am not doing anything on the computer, it makes small little static sounds that last half a sec. But when I do something on PC like opening a file or visiting the website, it seems to more prone and the sound are a really violent outburst of crackling static.