I thoroughly checked my entire system all that was left was hughesnet. My hughenet system showed DNS acceleration errors. So I contacted Hughesnet they told me that they were aware of the problem and that it should be fixed soon. My system is now back up and running.
I meant diagnostics through the system control I have a older system someone else may be able to help you. I click on my little wizard and then click on Diagnostics and then Hourly. I don't know what you need to do for the HT1100 system.
Also when I ran the windows diagnostic mine said DNS server not found. So we are having different problems. I wish you luck in fixing it. Have a nice day.