Poonam Yadav was born in 1981 in Lucknow, Uttar Pradesh. She lost her father even before she was born and her mother used to work as a paid domestic help. She attended Sanskrit Pathshala Kanya Inter College in Lucknow. She used to work at a PCO in Lucknow at a meager salary of Rs. 600 per month. She is a true fan of Asha Bhonsle and also admires Amitabh Bachchan and Shah Rukh Khan. During her free time she listens to music. She came to mumbai to participate in Sa Re Ga Ma Pa Challenge 2007.
She was chosen to be in Ismail Darbar’s Yalgaar Gharana. She was among the 10 finalists on Sa Re Ga Ma Pa Challenge 2007 and attained 4th place in the competition with public votes. She was eliminated on September 28, 2007. During Sa Re Ga Ma Pa Challenge 2007, she was nick named ‘Pocket Sized Powerhouse’ by the contest Gurus and the Host. At the Grand Finale of Sa Re Ga Ma Pa Challenge 2007 she sang “Hungama Hogaya” and was awarded with a Chevrolet Spark and a trophy.