How to fix the Acer Aspire 5740G black screen problem

Hello parislan;

What else is going on when you turn the power on?

remove battery en power cable push power buttom 30 sec and relase.
than disamble the acer remove allo components
if you have the mother board remove the bios battery.
take an wire and connect + and - togetter insite in the battery hole.
5 sec is enough.
put the battery back and put everything togetter.
you have to 2ddr slots put ram in the top not the bottom!!!!!!!!!!!!!!!!!.
now your laptop is fixed again.
greatings John