Problems with vengeance 2100

I have some problems with my headset. It worked perfectly for about 5 months but now the last weeks i have started to experience som issues with the product. last night i used the headset and it worked fine but today neither the "soundscroll" or the start button works as it used to. when it works i hold down the startbutton around 2 secs then i connects to the computer but now i hold it down for like 5-10 secs before it connects and when it does i got no sound and the scroll dosen't work either. Is this some hardware issues or software.