I had problems with my headphones getting stuck on mono.So I saw online that I should open up Control Panel,go to Sound,Playback,click on my headphones and click on Configure - and then just make it stereo or whatever.The problem is - the button is stuck on being "gray"!What do I do? Edit:I just checked,and my speakers have the configure button work no problem.It appears headphones are the only ones with the problem.