My microphone on my HP Pavilion g7 isn't working.

Hello

The laptop/notebook I have is the HP Pavilion g7 Notebook PC and the product number is D1C22UA#ABA

A couple weeks back I brought a SteelSeries Siberia v2 and everything was working fine on my notebook, until a few days ago when I went to use skype, my microphone wasn't visible as a mic on skype.

I went to the Control Panel and then to Sound and found out its "Currently Unavailable"  even If I re-plugged it in its still the same. I tested this headset on other computers and it works fine.

Here's some screenshots  http://prntscr.com/2cnyh3 and http://prntscr.com/2cnyo5

I think I have to install drivers but I'm not sure anymore

Thank you for your time,

               Eyleen