Hi DeBende
Your photo does not show the connection from the board to the LED strip. So you may already have tried the following ...
Adafruit recommend this method of connecting to a Neopixel strip:
Before connecting NeoPixels to any power source, add a large capacitor (1000 µF, 6.3V or higher) across the + and – terminals.
Place a 300 to 500 Ohm resistor between the Arduino data output pin and the input to the first NeoPixel. This resistor must be at the NeoPixel end of the wire to be effective! Some products already incorporate this resistor…if you’re not sure, add one…there’s no harm in doubling up!
Try to minimize the distance between the Arduino and first pixel.
Regards
Ray