Recently I have started gettng really annoying audio interference on my computer which is so annoying when watching videos or listening to music.

I have checked all the drivers and used the troubleshooter for audio and no problems found.

I actually wonder whether it could be my broadband connection causing this as this morning it was really bad. Then the internet went off for about five minutes and it has been better since this happened.
However, I checked both the telephoe line and broadband and BT say there are no problems.

I did fit a BT broadband accelerator on Friday in the hope it would help and thought, if it would, then should have seen results by now?

Any advice much appreciated.