Hello,i'm not very experienced in computer building this is my first build and i'm having trouble,i have everything set up right (i think) and when i hit my power button nothing happens also when i turn on my power supply it won't spin.I have tested to see if my power supply works with the paper clip trick and all my fans and power supply work.I have no clue what to do at this point and i really need help.(if you need pictures i can give them to you) Please reply as soon as possible!