Not sure whether its my board or my LCD

I have a 1602 lcd and I have it hooked up, people have told me to check my wiring but I know that it is good, I triple checked it to the diagram. When I try to write something on the lcd, it wont display anything, and the contrast wont go up all the way, any ideas as to what this is or how to fix it? I thought it might be not enough power but I don't want to try that until I'm sure I know whats happening

Please supply your program and a circuit diagram.

Have you tried using a minimised test program to test the LCD? Like one with the library.

Weedpharma

... people have told me to check my wiring but I know that it is good, I triple checked it to the diagram.

Famous last words. If you provide us with a good photograph of your setup we can check this out for you. We have to be able to unambiguously follow each wire in your circuit from one end to the other.

Don