Hi
Check all of the stuff that loading at startup.
An easy way to do that is to use CCleaner and uncheck the things that might be the problem and reboot to see if it fixes it. Look at the Tools, Startup tab.
It would be worth running Malwarebytes to see if there's some kind of Adware running though I've never heard an anything like this.
I do have a sound track from a game keep running in the background occasionally (but rarely), after I close it but loging out and back in stops it.
If that you don't find something that's starting it come back and see if other people have more ideas.
Mike