I know this is a common problem of the bios chip but I've tried everything on the dms site now I'm stuck... I verified ground and 3.6 V, solders are good. After that I verified the points D-N and the current what going well from the chip to the legs on the bios chip. I was wondering if any of you know if the resistance between each legs is supposed to be always near 1000ohms because I've got two at 400 ohms but I sincerily don't think this could be problem. Do you have any other ideas about what to do to fix the ps2?