I have worked out how to get past this, although the original problem isn't solved.

I switch on
the usual response comes up (incorrect user name and password)
I wait exactly two and a half...

Yes.
Then I'm put back to the page where all the users names appear (myself, others and admin usually) but there's now another 'user' called cross-000 which is at the top of the list and...

I can see the irritation my questions are causing, but I've been 'living with' this for months and its getting worse.
The question has been asked by other people I see, and they have solved it by...

I'm so furious with myself for messing with the settings on this computer.
My windows 10 will not run a system restore because, it says, my security (Kaspersky) is preventing it - and I should...

I run a kaspersky scan automagically every morning.

no worries - I'll live with it. Every time I try something I seem to make things worse, so I'm stopping while I can still get into the darn thing. I'll take the pc back to the shop and get them to...

Oh dear - its back again today. (my screen in 'accounts' setting doesn't look at all like those shown in any of the suggested fixes, so maybe I'm doing something wrong like not clicking a hard to...

Thank you - I'd already tried that, but windows 10 had no restore dates, and after a couple more hours of trawling the net I discovered it was disabled. Makes you wonder about the mind-set of the...

I'm out of my depth here.
I am 77 and until this update, have been weaned on XL so this has been a HUGE learning curve. This laptop I have now (a Toshiba Satellite C850D) isn't a touch screen, but...

I am a beginner with windows 10.
When I log in I now get 'incorrect user name and password' and I see I have now got two User Accounts in my own name. How do I get rid of the wrong one? (I'm sure...