Buzzing random

[chili]

Recently i purchased a new system from oc intel i5 gtx 970 etc and all was/is good, no issues at all.
last couple of days i have begun to notice a random buzz while listening to some youtube clips, it does not happen on all clips and only lasts couple of seconds almost like a feedback kind of buzz i am thinking it has to be a driver issue because they are the only things that have been installed.
windows update and geforce however i am unable to narrow it down anymore than that.
anyone any ideas?

forgot to add its windows 7 os

 

[ED209]

how are you listening to the videos? is it via speakers or headphones? I brought some speakers which connect to audio out and USB port and im always getting feedback from them.

is the noise coming from anything in the PC like GPU\PSU? can you try and narrow down where the noise is coming from?

 

[chili]

listening via headphones from front 3.5mm jack same issue if using rear 3.5 jack issue has only just started last 2 days hence why i think it is not hardware related