Anti-virus software on the activation of the problem

As early as about two months, anti-virus software installed, run good, but because the new system installed, so that there will be no software, and now I am from a newly installed anti-virus, and its request to activate the situation Under the original did not enter the activation code expired, this pop-up window expired, I do not know how to activate the original is not due Kaspersky not?

re-use the Internet to find an activation key authorization it, a lot of www.91yous.com
basically every day there are now too lazy to update my anti-virus software installed, Internet bare metal, 2 Do not have a week to go online to look for, a lot of