ok i figured out it was a bad usb device that was causing the halt. that saved me a huge headache 
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X2 3800+ Toledo @ 2.0GHz w/ Zalman 9500
2GB OCZ DC EL Plat. 2-3-2-5 2T
MSI K8N-Neo4
2 x WD 36GB SATA Raptors
eVga 7800GT @ 470/1200
FSP AX500-A 500w
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