My mic is not working

I just got a new laptop and I use the mic for over the internet talking. Microphone worked fine until a few days ago when the mic just stopped working. I tried two different mics and both didn't work but worked on other computer. All my volume is up nothing is muted. I don't know if its my soundcard or not, but please help.

Did you look in windows and the sound card software both to make sure its not muted?