LCD screen for Arduino UNO onlys shows a row of white boxes on top row - Project Guidance - Arduino Forum

Hello, I hope everyone is doing well. I am trying to use the LCD screen from the Arduino started kit to display text. I followed this tutorial exactly: [in comments] except that I plugged my LCD directly into the breadboard. The LCD came with header pins, so I didn't solder anything during this project. I am sure that all the wires work. Maybe someone can explain why there would be white boxes instead of text, so I can also troubleshoot. I also looked up other questions on this topic in this fo

Troubles with arduino LCD display - General Electronics - Arduino Forum

LCD only showing white squares - Project Guidance - Arduino Forum

Display Arduino TFT LCD 1.77 '' 160x128px Botland - Robotic Shop

Troubleshooting 16x2 LCD - Displays - Arduino Forum

arduino mega - 16x2 LCD showing blocks under text - Arduino Stack Exchange

Arduino with HD44780 based Character LCDs – Martyn Currey

16x2 LCD Shows Nothing on Top Row and White Boxes on Bottom Row - Displays - Arduino Forum

7 Arduino LCD display tips and tricks - Bald Engineer

LCD screen for Arduino UNO onlys shows a row of white boxes on top row - Project Guidance - Arduino Forum

16x2 LCD Interfacing with Arduino Uno: Circuit Diagram and C Code

School project, SOLVED - Project Guidance - Arduino Forum

Arduino 16x2 LCD Black Boxes - Arduino Stack Exchange

Serial Enabled 16x2 LCD - White on Black 5V - LCD-09395 - SparkFun Electronics

Lcd1602 shows only white boxes - Displays - Arduino Forum

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