I have Dell inspiron 15R n5110, just bought about 3 months ago. From few days I'm facing a persistent problem, that is whenever I close lid of my laptop it goes off, its not shutdown but simply like power cut in desktop PC. I even can not put my laptop to sleep or switch off monitor display because if I do so, same problem occur i.e. it goes off. I also tried to work while charging but nothing happens. I have tried the pre boot hardware diagnostic but it does not show any error...
In power option I've everything to "do nothing".