@miona Graphical display artefact, two different systems, unrelated to the OS since it's also showing in the BIOS screen.Had it been just the same system I would have said it just *might* be the graphics card, but since both the PC and the Playstation shows the same kind of artefact, my guess would definitely be the monitor being somehow bad. There's a lot of stuff in between the computer and actual displayed pixels.If it's still within the warranty period, RMA and return for a replacement.