Right, twiddling my thumbs one day whilst reading an ebook and listening to music through earphones, I came to notice increased 'static' sounds that seemed to reflect my computers operation (IE, if the Hard-drive was busy, say, in a defragmentation, the static would increase and decrese in sync with the operation of the HDD) a few seconds later, my right earphone stopped playing music and my left was playing it at a quieter rate. Both still have that static sound. I have no clue as how to fix this, as I work with AI, and I'm normally told by my program what exactly is wrong with it.
This was after the malicous removal tool completeing it's instillation.
Only way would be to fit a cheap PCI sound card, this would have to be a Desktop or Tower for fitting a PCI you would need to remove the side off computer to check you have a spare white PCI slot From £4.99
click here and reviews on this page for the sound card