Can't Root My 2013 N7

Hello all,

Sorry for not having a dynamic and current issue. But my issue is that I can't root my N7. I followed the steps from this video below. I'm running 4.4.4 I followed the steps on the video word for word. 1-installed root checker, 2-go to settings/security/ check Unknown sources, 3-Go to towelroot.com, 4-Click the lambda, (here's where things go crazy) after clicking the lambda my N7 browser opens one browser window after another, after another, after another....... I have to disconnect the wifi to stop it.

Any help? I thought I was following the steps pretty good here.

followed directions from the video below.