Unreadable characters on the screen after the Grub menu disappears, the boot is aborted

Recently, systemd has repeatedly displayed strange characters on the screen immediately after the Grub menu. I searched for similar cases but didn’t really find them. What could be the reasons for this?

Looking at the boot log with help you see what’s going on

journalctl -b 0

Thanks. It was the last such event a few days ago. I’ll see you the next time the incident occurs.