I can empathize! Take a deep breath! When something like this happens, your emotions really keep you from thinking clearly. You need to think about what might have happened.
I really am not familiar with this rig, are we talking about the Blizzard PPC card? I took a look over on BBOAH; I see the fan is not cooling the CPU. What is it cooling?
Was this thing working when you discovered you needed a replacement fan?
Have you been taking anti-static precautions?
Sounds like the 1200 boots but not the PPC card, correct?
Try removing the PPC card, uninstalling any driver software that it takes and re-installing the hardware & software from scratch.
If you can give more info, someone might have more ideas. Maybe someone with hands on experience with this hardware.
Good Luck!
