Computer build for the first time. Won't boot to desktop after bios

So I just literaly got done building and connectin my comp new comp for the first build I have ever done. I did many pre boot up test to see fans, LEDs, recognition from the motherboard and gfx card. Everything went smooth and well no miss haps or problems. But when I went to plug the monitor into my comp and see if the real test work. It booted up showed me the Asrock bios menu, then went on to a different screen where it asked me to (repair) my system or another chose to boot up normally and either way it went it didn't boot up past that point like it did not recognize my HD. But I went into the bios and found that everything was located.

Help me!!!
Did I wire something wrong?
Do I have to configure something in the bios first?
I have not installed my motherboard software that came with it. Is that the problem?

Well thank you again im in dire need. !

You should install the MB software.

Is the HD from another computer with the OS already installed?

Yes the hard drive is from
My previous comp. I was hoping it would transfer over easily. And OS is installed.

I would totaly but don't have cd or product cm

Yea your gonna need to get a copy of Windows 7. if you don't want to spend on a copy from best buy. Order a a OEM copy of windows 7 online or get one from Comp use if you have one near by