LCD screen for Arduino UNO onlys shows a row of white boxes on top

Only white stripes on I2C 16x2 lcd display - Displays - Arduino Forum

LCD only shows 1 row of white blocks - Displays - Arduino Forum

16x2 LCD only showing white squares - Displays - Arduino Forum

Interfacing 128x64 Graphical LCD Display- Blue Backlight with Arduino

I2C LCD with ESP32 on Arduino IDE - ESP8266 compatible

Lcd1602 shows only white boxes - Displays - Arduino Forum

Interfacing 16×2 LCD with Arduino

SunFounder IIC I2C TWI 1602 Serial LCD Module Display Compatible with Arduino R3 Mega 2560 16x2 : Electronics

I2C 16x2(1602) LCD Display Module for Arduino - DFRobot

White Boxes Issue on LCD 1602 - Displays - Arduino Forum

How to Use an LCD Display - Arduino Tutorial : 5 Steps (with Pictures) - Instructables

Lcd1602 shows only white boxes - Displays - Arduino Forum

Top row of LCD shows white blocks - Displays - Arduino Forum