Unstable boot after install with LUKS

Hello everyone.
I just got a new laptop and installed Manjaro Gnome on it using the latest ISO available, with encryption and UEFI. Sometimes though when I boot and right after I type in my LUKS password, I’m facing a black screen and nothing happens. I can’t change TTY, my manufacturer’s logo doesn’t appear and I’m basically stuck. This happens randomly, sometimes several times in a row. Is there any way to troubleshoot that? I’ve tried almost any combination of keystrokes that could have had an effect on the system, but I feel like it’s just… Stuck? Or maybe it does boot but my screen doesn’t boot up.
It’s a Dell Latitude 7400.