When I start my pc and log in, it starts to launch ok, about 5 items start to populate the taskbar at the right hand side then the screen goes black and it returns to the login screen again. If I log in again it will do the same thing ad infinitum. However if I don't try and log in either from the login screen when it goes back to it or when it starts up and just restart the computer from the login screen and log in again, it starts up just fine. Any ideas ? Win 10 home,version 1803 OS Build 17134.706