From today morning my Dell Latitude D630 is not booting. Called service center , the guy asked me to press different kind of key combos for troubleshoot. Then he asaked me to open the keyboard which is a real bad idea as I can damage the system. After a big argument on this finally they agreed to send an engineer with required parts.
Asking a user to work/open the hardware is not at all a good practice, don't know why they keep asking the same.
Meanwhile view this (less than 1MB), I hope that code is safe in my broken box :)