Run diagnostics for everything. You need contact Dell tech support. This isn't the place.   [URL]      
Hi, I badly need every help or assistance I can get. I recently bought this Dell Latitude 5400. Few weeks ago it started acting up, At first it's shutting down automatically or freezing but working fine after rebooting it. Then recently, as i try to open it, it's openinng up, showing the Dell logo in the screen and the loading icon upon turning the power on, but after loading for a few seconds, it's turning black screen. It's still power on, lapto still running, light on the keyboard caps lock and F4 keyboard function Are still on but it's just black screen. I've run hardware diagnostics on the LCD screen and there's no abnormalities in the screen. How can I have this fixed? I badly need your help especially Dell's assistance on this as I need to get this fixed immediately since I have work today. Please help me get it fixed. Thank you.
Dell Latitude 5400 Black screen after showing dell logo and loading icon upon 
turning the power on