Hi trickpa, and welcome to Geeks to Go!
While the "case study" you read was very well written and technically accurate, I'd like to quote two sections from the study that you should have paid particular attention to.
First of all we are obliged to warn the Reader, that all attempts to disassemble a notebook result in loosing guarantee rights and are, therefore, performed at own risk and responsibility.
Before getting to work, the key issue is the appropriate ESD (Electro-Static Discharge) protection. It was highly important for me, because this way you can avoid damaging the fragile components of the notebook.
So, I put on proper gloves and antistatic armbands, and worked on top of a grounded anti-static pad.
The FLASH-ON-ON error code that you are receiving when you run the diagnostics indicates that there is a problem with the CPU. But discussing with our return trends department, the FLASH-ON-ON error code is actually caused by the motherboard 78% of the time. I think that while you were replacing the video card, static shock fried the motherboard, and is causing this no POST issue.
If you don't mind risking even more damage to your laptop, you can reseat the processor. Chances are that it is the motherboard, considering the extreme risk of electrostatic discharge.
Did you take any precautions against electrostatic shock as instructed in the case study?
Edited by The Admiral, 18 November 2008 - 04:08 PM.