ok... big change in results here. I removed all of the PCI cards, all cables, and the CD-ROM.
The BIOS post fired up! Memory check happened super fast and i was able to get into BIOS in seconds. Basically... the way it is supposed to work.
CPU temp in BIOS is now 39 degrees celsius.
I did not run RAM diagnostic, but due to these results, I am thinking the RAM is not the problem, right? Obviously, I will do that eventually anyway.
But, now that the BIOS is loading up good, what should I do next?
If I do try to load Windows on to this new hard drive, I will still have the problem with it not detecting all of the space. In other words, it will probably only detect 13100 MB instead of the full 750GB, but I guess I'll deal with that a little later.
What next?