Garbage on serial lcd display with Arduino Uno

Does anybody had this problem before : when i send my serial data to my Arduino Uno i only have garbage.I troubleshooted it to find that the start bit is always high.Any idea how to fix the problem ?

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This happened to me when the baud rate in the sketch is different than the baud rate in the serial monitor on the computer. Also, my serial LCD display needed to have the same baud rate setting.