Bootcamp on Monterey - No Windows / Mac choice on Logon - Logon screen asking for wifi password - Keyboard unmapped

Hello

My friend has an MBP 15 (AZERTY keyboard) running Monterey and Bootcamp. She has not been

using Bootcamp for a while, that is probably since well before she upgraded to Monterey. She tried to logon to Windows today and instead of the familiar screen asking to choose between Windows and Mac, she got a screen asking her for her wifi password. And when she tried entering it, the AZERTY keyboard had been remapped to some other configuration. When she finally figured which letter was which and she managed to enter the password properly (at least this is what she thinks so), the computer rejected her password. How can she log on to Bootcamp as she used to? Thanks a lot