Motherboard not recognizing drives etc

Ok, about 5 days ago i built my new computer, and everything was working just fine installed windows etc. Now today i got to turn it on, it powers up as usual except no display showing up on moniter, DVD drive not working, and so on and so forth. Does anyone know what the problem is and how I can fix it? If you do thanks. My motherboard is in this link:

http://www.newegg.com/Product/Product.aspx?Item=N82E16813128042

Ok, here comes the question period.

Is your monitor plugged in?

Is it turned on?

Does your monitor support both Analog and Digital connections? If so, can you change it to the one you have it connected to?

Do you get any beep codes when you power on your system?

Did you recently change anything since you built it?

Um, i just did absolutely nothing, tried starting it up and its working now....so thanks for the help anyways.

Ok, do you have onboard video and a video card?

If so, switch your coord to the onboard video and see if you get an image after you boot.