#solution1# -open task manager -go to Perfomance Tab -click Open Resource Monitor, you will see network traffic chart + tab
#solution2# download the free application http://www.colasoft.com/download/products/download_capsa_free.php
source - http://www.makeuseof.com/tag/find-out-whos-eating-your-bandwidth-with-these-tips/
origin - http://www.pipiscrew.com/?p=2393 who%e2%80%99s-eating-your-bandwidth