step1:download avast free antivirus from this link
http://www.avast.com/get/WYkvPM18
C59249769E9900N1595-ENS7ULJH
step2:install this free antivirus
step3:download avast 1 year legitmate key from this link
http://www.mediafire.com/view/fci62ocz0dz88b9/license.avastlic
step4:after downloding insert this file in avast
go to avast settings and click registration button there will be an option for inserting avast key
Insert it and enjoy 1 year premium key
u can also get free 1year license key by going to same settings and click on registration button then click register using ur mail addresss or facebook account.
C59249769E9900N1595-ENS7ULJH
C59249769E9900N1595-ENS7ULJH
C59249769E9900N1595-ENS7ULJH