I havea 333 (its a smoking machine i tells ya) and it was working fine in one case.
I removed the motherboard from the case along with all the other devices. I am a VERY anal person about removing / installing hardware and I amke sure I have a clean workstation, proper tools, the only thing i didnt do is ground myself.
Well, I have put it in a new case and now it is not working. The LED on the motherboard is not lighting up meaning what it is not detecting any power.
I have tried 2 different PSUs and still no light. I have removed it from its case, it is on my workbench and only has CPU and RAM in it as well as power, and still there is no light.
I have replaced CPU, RAM and PSU. I was VERY carefull when removing the mobo and highly doubt that i had scratched / damaged it in any way.