Manjaro hangs and sometimes shows red and white checkered square

[cscs]

@newbietolinux

reinstalling Manjaro 5.15

What does this mean?
Maybe kernel 5.15?

@newbietolinux

There are five blue dots that appear immediately before the OS runs (although this may be for the splash page)

Correct.

@newbietolinux

Often my Manjaro hangs. But recently I am seeing a square of red and white (it almost looks like a scan code for a phone) that takes over the screen and everything freezes.

[HowTo] Provide System Information

This tutorial is superseded by this one. Remember all Tutorials are wiki posts that can be edited by TL2 (Trust Level 2) members and above. Welcome to Manjaro! To allow all of us helpful people on this forum TO HELP YOU, we need some basic information about your system. This probably means you described the symptoms of your problem, but now we need some more information to know where the origin of your issue is exactly. Someone else probably linked you to…