How can I get a job in MBA HR field after a gap of 2 years? What should I do to update me with the current job scenario?

Monika, forget the gap and begin fresh. Make a new CV, Exhibit your skills. Mention in your CV the right reason for the gap. Prepare yourself to face the interviews. Circulate your CV to the placement agencies. If there are suitable business houses in your city try to contact their Personnel or HRD