I noticed that your in the Netherlands.
When you say you have had it 2 years, is it over 2 years old, or is it comming up to the 2 years old age ?
reason I am asking if it is under 2 years old and you have the invoice to prove that it is under 2 years since you bought it, then you can speak directly to the manufacturer of the mouse and quote EU Directive 1999/44/EC
http://ec.europa.eu/consumers/cons_i...op/guarantees/
which Basically states that you have a 2 year guarantee on goods from the day of delivery to you, and if the goods go faulty within that time frame you are entitled to a repair, or replacement of the said goods.
I know for a fact this works as I had to quote it down the phone to someone at Sharkoon to get a replacement headset (much to his annoyance)
if it is older than 2 years, then you could open it up and see what the problem was