Ok guys - here's the deal.
Father-In-Law has a Dell Inspiron 4150 laptop which is just 2 years old. He seldom uses it and whne he went to use it the other day it was dead. Wouldnt work from either mains or a fullly charged (you can take it out and push a wee charge level button) battery. No noise, no lights, nothing nadda zip.
I figured it could be the cmos battery (similar thing happened on my 486 desktop I recall - many years ago). Replaced that and nothing. I have a couple of spare bios chips that are the same size and would fit in the chip socket on the laptop. Mine are from dead nforce boards, but I have bios savior and could force flash one to the correct Dell bios. I will try that becase why not - it might work?!
What you guys think is the problem? Power not getting to board somehow - could turn it on and try proding with multimeter to see if any power going through anything. If it is the System board those things are expensive - cheapest is 200 for a refurb on egay! 400 new!!!