Chosen Solution
Two weeks after the end of the guarantee, my laptop refused to start (while I was using it normally few hours before) Refuse to start means : nothing… really nothing… not even the power leds. I tried of course to press the power button a while to empty the electricity… noting.., I have disassembled the laptop, I have removed the battery and CMOS battery. And, when I plug the cable, I see one led flashing once very fast HELP!!!!
If you haven’t fixed this try re-seating the ram or using one stick at a time.