thank you man p5bdkw.
i found a way to solve that. since i can not see any devices at all under the recording tab, so there is no way to right click anything.
what i did was, i went to the manufacturers website for support. i downloaded the audio drivers
, then installed it right after the download.
and then, bingo! all the audio devices went back to where they used to be.
again, thank you dude for the reply.