16 bit HT Width Preventing OS Startup


I just bought components for a new computer and installed windows 7. However, I was only able to install Windows 7 while on the 8 bit HT Bus Width setting in BIOS. It would freeze on the 16bit or AUTO settings during install otherwise. But now with Windows 7 installed I can't change it back to AUTO or 16 bit. (when I do it freezes during OS startup) I have done as much trouble shooting as I can with my knowledge which has included updating BIOS/drivers. Any insight would be greatly appreciated.

Basic Specs:
OS: Windows 7 (64bit)
Motherboard: ASRock M3A770DE
CPU: AMD Athlon II X3 455
RAM: (2X) 4Gb Corsairs


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