Black screen

Had HughesNet installed a few days ago.  Ever since when I am on the internet my computer screen goes black for 2-3 minutes.  Sometimes the page will come back up, but usually I am kicked off the internet.   Never had this problem with my previous provider Viasat.  I changed to HughesNet to save money.  Wish I had stayed with Viasat even if it was more expensive.  I guess I get what I paid for.  Cheaper price and worse service.