Start-up problems on new PC. Help?

[Kyl0rr]

Hey, I recently got a new iBUYPOWER GAMER POWER TG500 Gaming PC shipped today, and am having trouble with getting it to work properly.
Computer specs shtuff:
AMD FX-4100 3.6GHz
8GB DDR3
500GB HDD
NVIDIA GeForce GT 520
Windows 7 Home Premium 64-bit


I'm too lazy to explain it all, so I'll just provide pics:

First it goes through the normal start-up screen, then gives this screen

I then insert this disk

Reads the disk

Quickly changes to this screen after that

If I choose any of those 4 options, it will give a message "Reboot system now Press any key to continue...". Then, when I press a key, it just reboots the system and goes through the same set of messages. Help, please? And sorry if it's something really simple, I'm a total newb when it comes to computer stuff x)

 

[Blade2]

You need a OS disk, insert one, and go in BIOS and make it boot from cd/dvd drive.

 

[BK_123]

Was the OS already preloaded?

 

[jmacavali]

Is the CD Drive set to boot first?

 

[Kyl0rr]

Only came with 3 disks; one is Graphics Accelerator Driver CD, another is the Windows 7 Reinstallation (which it says all the software was already put in, an I don't really need), and than there's the disk I already put in. If I put in the first disk, nothing happens. If I put in the Windows 7 Reinsallation, it runs it and I have the option to reinstall Windows, which it won't let me do because it says there were no drives found. Like I said, sorry if I'm missing anything obvious, I'm horrible with computer stuff.