Loud Humming Static Sound

by KingzSmith
(South, GA)

I have a studio condenser mic in my room that produces a loud humming noise and static whenever I record or listen to my vocals.. I have a Samson CO1 Studio Condenser microphone hooked up to and Alesis USB8* Mixer that hooks to my computer... I need to know if its my studio mic converted to a USB mic that produces the humming static sound or if its the room... Which mics are better for recording in small untreated room areas?...