you guys probably know this already i just found out and was amazed that it worked. so i figured i would share it with you.
i work help desk and alot of times people with dead pc or laptops that wont power on callin , so i have them from now on unplug any devices from it like external keyboards,mouse,printer,power cord etc. everything and have them hold down power for 45 secs. i was told that drains the computer and after that just plug in the power cord and so far i had alot of computers and laptops that came back ALIVE!!!