FRom deepseek
It sounds like your friend's PC is stuck with the LockDown Browser screen, which is often used for secure testing environments. Here are some steps to try and resolve the issue:
Boot into Safe Mode: Restart the computer and boot into Safe Mode. This can help you bypass the LockDown Browser and access the system settings. To enter Safe Mode, usually, you can press F8 or Shift + F8 during startup, depending on the system.
......
......
......