Strange modem behaviour after 1803

OS Windows 10 HomeSpeedport Internet Modem.
Before 1803.
A) Modem through a USB 'dongle' on PC. Everything o/k, could select Auto or Manual internet start by right clicking on the internet icon (bottom right on task bar). Skype however was very bad with broken vid and sound.
B) Removed USB 'dongle' and connected Modem direct to PC with appropriate cable. Everything o/k, however could NOT select Auto or Manual internet start by right clicking on the internet icon (bottom right on task bar now looks like a small screen) as the only options presented are, Troubleshoot Problems and Open Network Internet settings. Skype however was now excellent. The internet automatic start on boot up was at this time only a small problem but out of interest is there any way to restore a manual internet start option from the PC.

After 1082.
All as in B above except now on booting my Speedport goes through a reset procedure not allowing me to use internet or telephone for about 60 secs. On shutting down the PC the same occurs. Any ideas on this one.

The 'After 1803' wrongly entered as 1082 has been solved. Before 1803 part B however remains unsolved.