My laptop Dell Inspiron 3421 (updated from Win8 to Win8.1 to Win10), I try to open my laptop yesterday and it won't turn on and i realized that the power LED light and HDD LED light turn on. After a few second the HDD LED light off. I try a few method (like press the power button for 30 second) but still it wont happening. I try change my ram into second slot, try to blow it even lick it to make sure there is no dust on it. I turn on (finally). after i shut it down and try to open it back, still it wont make it. I need to play again with the ram.