What I mean is that I switch on and the login/password screen of windows appears no matter what I do. If I try to boot to safe mode by holding F8 or F11 the same windows login screen appears asking...

I have tried that but nothing happened - no reaction to F8, F11 or shift+F8/F11.

Hello! I would be very grateful if you can help me.
I have Windows 10 on my laptop. Today I switched it on, the welcome screen did not appeared as usual but the login/password screen showed instead....