Thanks for some feedback Crewton. I tried your suggestion of starting in Safe Mode and then rebooting but got the same lock-up at the motherboard splash screen.
Originally, this computer was a server at my office that was replaced for a faster one. While it is about 3 years old, it is a lot faster than my 5 year old computer at home so I did a fresh install of Windows XP. When I realized I couldn't legally transfer my OEM Windows XP to another computer I bought Windows 7 and installed that. The install went flawlessly, but now that I think about it, I didn't have the rebooting problem when I had Windows XP installed. With the XP install, I had to manually install the Intel ICH9R SATA RAID Controller driver. For the Windows 7, I didn't. Wonder if it could it be a RAID driver issue?
I have considered flashing the BIOS but haven't done so yet. I'll give that a try and post the result here.