HP India — system not properly worked

Address:

Patna, Bihar

regarding sir, this about a problem i am having with my hp pavilion p6000 desktop product no-BZ613AA#AC serial no-INA110VZ7C model no-p6730in my system is dead 20 days ago i complain my first comp. no-[protected] ensure support services boring road patna he cant solve my problem than i complain 2nd time my second comp. no-[protected] he changed my system motherboard than system is on but not properly worked.when the system starts the hp logo is not displayed and boot starts running on the screen.without my permission my case is closed.than again third time i complain my comp. no-[protected] date-29/01/2015.i request to you please sort out my problem.Thank you Avinash kumar