Basically, there used to be a green bar that appeared in the centre of the screen about an inch/inch and a half up when I turned the volume up and down the sound on my laptops keyboard.
It has now dissapeared!
It is an acer aspire 5535.
Now the only thing I have done is to change some programs which I didn't want to run on start-up of the laptop (windows live messenger etc.) and must have diabled this as well.
I can't remeber what it is called or how I would get it to start working again!?
Any help much appreciated and repped.
P.S. This is not the volume icon in the toolbar!