When starting up, after hitting any key on the screen with today's date which would normally cause the password prompt to appear, there is no text box to type in a password or pin, the sign-in screen is just the background pic and three items in the lower right: network, accessibility and power. The touchscreen, touch-pad, mouse and keyboard are all working.
I have seen a similar issue resolved on other posts; except on those the issue only occurs after waking from sleep. For me it is on start up, meaning I can't log in at all and access settings etc. for the solutions suggested on other posts.