Windows Frozen At Loading Screen

[bluecanart]

I don't know much about computers, so when I tried installing iTunes, and the computer completely froze, I shut it off manually, and upon restart, accidentally set all of the BIOS settings for my motherboard to defaults, now when trying to boot my computer, it gets stuck at the loading windows screen, I already tried reinstalling Windows 7.. Any suggestions?

Computer:

Intel Processor Sandy Bride-E Intel Core i7-3820 3.6GHz (Quad Core)
Intel Motherboard 2011 [x-fire,SLI] ASUS P9X79 [SATA III, USB 3.0]
Quad - Channel Memory 16GB (4x4GB) DDR3 1333MHz
Primary Hard Drive 1TB 7200 RPM
Graphics Card AMD Radeon 7950 3GB (Min. 650 Watt Power Supply)
Power Supply Standard 800 Watt
Operating System Windows 7 Home Premium 64 Bit

 

[Cyberat_88]

Who set the bios up for you ?
You can have all pages set to the "Setup" mode instead of "Safe" or "Default", without causing any damage to the system.