Issue resolved after working with Dell Agent.
Hello there, So I’m having this problem with the DELL laptop inspirion 15 3000 where when I power it on, display lights gets turned on, light on caps lock gets turned on, even light next to where you connect the power adapter. Processor gets warm, fan is working, but there is nothing on the display. I have tried: -connecting to external screen via HDM to check the display. When I change the HDM on TV to the right one, laptop’s screen light get’s turned on and off. -taking RAM stick and placing it to the other slot. I’m not sure how I can check if my motherboard died or if my BIOS got corrupted. All I remember was night before deleting linux from the bios.      
DELL laptop inspirion 15 3000 no display