THE GOOD: Last week migrated from TPG ADSL to NBN100 with phone NBN installed and tested as working TPG supplied modem/router installed connected and working Desktop PC cabled directly to modem/router ethernet port - connected and works - network is UP Desktop PC wifi connected to modem/router tested and works  - network CONNECTED General internet connectivity works per normal with either ethernet or wifi connection - nice and FAST THE BAD: Speedtest.net site loads up but after clicking START it fails to find server and times out Youtube.com page loads and can search for content but  content will not play - blank black player screen with Loading Icon rotating . . . TROUBLESHOOTING: > try both Chrome and Edge - neither works > completely disabled PC Antivrus & Security - still NO GOOD > switch PC between ethernet and wifi connection to modem/router - still NO GOOD, neither works > PING/TRACE/DNS Lookup of youtube and speedtest.net all WORK > disable firewall in modem/router - still NO GOOD * > switch PC to wifi, disconnect from modem/router,  connect to a smartphone wifi Hotspot on Telstra 4G bypassing TPG and NBN and  EVERYTHING WORKS - speedtest runs and can play Youtube contest as normal ** Tried for 2 hours to talk with TPG support - ON  HOLD **   What Have I missed here ???   Peter ... View more