I Want To Format My New Inspiron 15r-5520 and want to Install Fresh Os can i do that??

hi

   I Want To Format My New Inspiron 15r-5520  and want to Install Fresh Os  can i do that??

i jus  bought New laptop but it came with PREINSTALLED windows 7  with  recover partition.   i dont want this.  i want to FOrmat it and want to install windows 7 by my self  and want to make at least 3 partition

can u tell me can i do this??     will i face any problem please help me

is it safe??