Why does my laptop turns off instantly when it starts booting? Sometimes it boots completely and after I use it for few hours and shut it down it will not switch on again. Most of the times it won't even respond to the charger or power button when its switched off. Sometimes while booting the fan starts and after few seconds the fan stops and laptop turns off. Sometimes after I press the power button a dim screen comes which is hard to see but my laptop starts booting even though the screen is almost black.Also I use it by removing battery and holding power button for 30 seconds again and again and after some attempts it responds. But after that also sometimes it wont boot completely. I don't know what is the problem please help. I am using Dell inspiron 3542. Please help.