3.5inch RPi LCD (B) with Raspberry 4

Hi guys,
I bought the 3.5inch RPi LCD (B) Display and want to use this in combination with my Raspi 4.
Sadly no approach of installing drivers etc. had worked properly. After restarting I always have the attached problem. Can someone provide a solution to this?

Thanks in advance.

Please check and follow all the resources here: https://www.waveshare.com/wiki/3.5inch_RPi_LCD_(B) If nothing works, it’s a bad display maybe.

Hi @Philipp283079, Welcome to the Forums!!!

I don’t think its supposed to look like that.

How does the 3.5" display look while HDMI is like that?

Could you also let us know what version of Pi OS you are running as well.