Screen flickering after first install of Manjaro Budgie

Hi, I just installed the latest version of Manjaro Budgie on my computer. The first boot was fine, then the software manager asked me to update so I did it. After restarting the computer,
the login screen and my desktop were completely “glitched” and very difficult to use. I tried to reinstall Manjaro but the same problem every time…
(I can add pictures if needed)

Thank You by advance.
Sorry for my English (I am French…)

You might have the same problem as in this thread.
Does that help?