What's wrong with the lcd screen?

Question

Arduino

It looks like this:

Here is the code:

#include <LiquidCrystal.h>

// rs e d4 d5 d6 d7
LiquidCrystal lcd(8, 9, 4, 5, 6, 7);

void setup() {
  // put your setup code here, to run once:
  lcd.begin(16, 2);
  lcd.setCursor(0, 0);
  lcd.print("Hello");
}


void loop() {
  // put your main code here, to run repeatedly:
}

Everything is connected correctly.
What could be the problem?
Thanks in advance for your reply!

Answer 1

Are you sure everything is connected correctly?
yes, and lcd.setCursor(0, 0);
position at 0 0?
Try to specify something higher
Yes, and I don’t see your board!

Answer 2

I had exactly the same problem due to poor contact, I solved the problem by soldering the female connector