I just built my PC and screen won't turn on?

So I just built my PC. I didn't put the hard drive in but everything else is in. The reason I didn't put in my hard drive is cause it's still in the mail but should be here tomorrow so I thought I might as we'll build the rest of it. Anyways I out it all together and everything works except the video. I turned it on just to see if it worked and I plugged in my keyboard and my mouse and they both lit up and so did my psu. My fan on my gnu also started blowing. I didn't hook up my fans yet either btw my gpu just has one on it. So everything's hooked up and I have it plugged into my monitor and I turned it on and I hear my gpu fan running and I opened my DVD reader and it did that and everything seemed fine except that it didn't have any video. I don't have a dvi port on my monitor but the gpu came with a dvi to VGA adapter so that's hooked to the back of my PC and then my VGA to my monitor. I also touched the top of my CPU when putting it into place I didn't touch the bottom or any pins but I did touch the top. Could that hurt my CPU? Do you think it's just my VGA cord? It's been used before. I don't have any other pcs that I can hook it up to to see. I don't think it's my dvi adapter cause it was brand new.