I got the non-RAID board and had the same problem. I thought it might be my video card, so I snagged my sister's (which is already running in a P4 system) and tried that too. Still nothing beyond POST 29. I tried setting some of the jumpers to get the CPU to boot, but I had no luck there either. Finally, I called Abit. They told me that I needed to upgrade to BIOS 38, and that if I didn't have another P4 chip to do it with, they could send me a new BIOS chip with the new BIOS (for $12.00). I sent off for it on Saturday. Hopefully, I'll have that by this weekend and I can get my new box up and going...
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I haven't seen anyone that has been able to get a 1.6A up and going on a TH7-II without upgrading the BIOS first. Lots of people have done it with the 1.8A, 2.0A, and 2.2A...which makes me wonder if the 1.6A is a slightly different Northwood than the rest...