Hello, just wanted to pass along what just happened to me in case it might help others. I installed a magic 3.1 and clip in a version 7 ps2 and after a couple months went by the chip stopped working. I took it out and then the unit worked fine but had no sound and no picture. I did some searches and found that the bios clip on the magic 3.1 clip was the problem. When its pressed on the wrong way it can somehow loosen the bios chip and cause this problem. The solution was to heat up each pin of the bios chip to re-seat them to the main board. I also heated up the pins on the AV output box and all is working 100% now. An easy fix for what I thought was a lost cause. Hope it might help others with the same problem.