Can'tcomplete subscription

We have an HP Net Book running Windows 7 with Norton version 17.9.0.12 (Which is currently expired).  When I started the Net Book up this weekend Windows Security came up and prevented Internet Explorer from connecting to the internet.  A scan reported 30 different viruses and other issues.  So we have the infected Net Book with no way to get onto the  internet to update the subscription and no drive to put a disc in to load the program from a disc. 

  How else can we upgrade the Norton Security program?