when i try and power on my 13 inch macbook pro i get a loud beep from my hard drive, i just bought a new hard drive today and installed it and i still get the same beep. the screen is always black when i try to do this. if i power on and off my macbook about 3 to 4 times it will finally boot into osx but i do not want to keep doing this, does anyone have any suggestion on what i could do to fix this? 
edit: it only beeps once for about 2 seconds
edit: it only beeps once for about 2 seconds