I ignored your first post because 95% of that stuff had been covered
previously.

I have used the recovery console, I have used FDISK, I have replaced
the PS.
fixboot, bootcfg, and fixmbr have been done. The partition is active.

Please read through the other posts.......it sucks to repeat the same
things over and over.

It does not get to the point that I can go step-by-step unless a
bootable CD is in the drive, and when that is the case it boots without
problems, so that would be pointless.

w_tom wrote:

You are doing undesireable hardware swapping. WD diagnostic says
drive hardware and computer interface hardware is OK. No reason to do
any more hardware changes. None. CPU swapping could never be
associated with this problem. WD diagnostic says drive is OK. So we
move on to other usual suspects.

In that other post were a long list of things to verify confirm
without doing any changes. For example, since OS CD-Rom boots, then
use the Recovery Console. Also use Disk Manager (remember the question
about making the partition active that is set in Disk Manager)?
Become familiar with Windows programs such as fixboot, bootcfg, and
fixmbr. What is in the file BOOT.INI located in the root directory?
Did you single step through the boot process by pressing F8 when boot
first starts? Those voltage measurements with a 3.5 digit multipmeter
are informative - can identify what creates strange unexplained
problems even though disk diagnostic says OK.