mic fail

hello guys, i have a problem,im using windows xp,and when i wanted to make some montaged i needed sound from ingame but now i can just to record sound just from INGAME my microfone isnt working anymore,please do you guys know how to fix this?i have realtek and i reapeat windows xp,and i realy need a working microfone,my microfone is working cuz i tested it at one of my friends!

the microfone is fine... ffs...