AUDACITY NO LONGER RECORDING

About 2 Weeks ago, my Audacity stopped recording any audio from others. Now to Clarify my Audacity does record me, and technically it does record others talking and when playing off youtube. But it is like 5% at max compared to normal in the past. other formats, it doesnt record at all. I didnt change the settings when it started, so I am unsure. Would anyone know what could possibly be the problem that could fix it? Or maybe an expert that could assist me in figuring out what happened. I am needing this immediately so i can fix the problem for my show.

my Audacity does record me, and technically it does record others talking

Are you trying to record Skype?

Are you set for Windows Auto Update?

Koz