I2C LCD Serial Interface Board not displaying text The code dont gives error, but not displays "Hello World"

#include &lt;Wire.h&gt; 
#include &lt;LiquidCrystal_I2C.h&gt;

// Set the LCD address to 0x27 for a 16 chars and 2 line display
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  // initialize the LCD
  lcd.begin();
  // Turn on the blacklight and print a message.
  lcd.backlight();
  lcd.print("Hello, world!");
}

void loop() {
}
This can be due a lot of reasons, among:

Most common:


Backlight is set too low (there should be a small dial)
Circuit problem (recheck), and post it.
The I2C address is wrong, there are sketches to check it.


Less common:


Broken LCD
Broken Arduino
No power on Arduino (check LED)