I received my new computer yesterday and put everything together. Upon booting up it will attempt to post but during the time it is "detecting IDE" it restarts and does it all over again. I installed a fresh copy of windows 7 on my hard drive and even got windows to start during that whole process. For some reason when I restarted the computer after installing drivers it started back into an endless restart. I installed the windows 7 with the hard drive plugged into this new computer and not my old one (to hopefully take care of any confusion).
From your description, it sounds like one of your drivers caused the issue. To save time I would just re-install Windows 7 and then install drivers one at a time, the latest version available freshly downloaded, and see how it goes. One of the drivers may have been corrupted.
When you do the re-install, select custom and delete the previous partition, and then allow Windows installer to install to the fresh unpartitioned space.