Originally Posted by Drahcir

I'm a first time poster having just found this forum.

First, please accept my apologies for resurrecting such an old thread but...

This is about the only useful info I have found on this problem. I am recently experiencing this exact issue with my 450sx4. I know it is an out of date/old machine, but it is a work laptop and they won't replace it. I am forced to try and repair it. I am not an expert but I am quite skilled. I have had this machine apart and have tried the suggestions outlined here to no avail. The laptop boots fine but will eventually display this "test pattern" type video (even on an external monitor). Sometimes all by itself, but always if pressure is applied to the case or any movement or twisting of the case. I'm assuming the mobo, but if I order a new one (company will pay) and that doesn't fix it I'm toast. :)

Anyway, my question remains....Has anyone actually resolved this problem?????

Thanks in advance, and again, I apologize for bumping such an old thread.