I’d suggest that you follow the steps mentioned below and check for issue resolution.
Switch off the computer.
Disconnect the AC adapter from the system.
Remove the battery from the computer.
Press and hold down the power button for 15 seconds.
Then connect back all the peripherals and check if the LCD works.
Also, I would suggest you reseat a few components, like memory, hard drive and optical drive and see if that makes a difference. In the link below punch in the system service tag or express service code and you can access the user manual for removing and reseating components.
DELL-Ravi Ch
7 Technologist
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7.1K Posts
0
November 4th, 2014 02:00
Hi Sumon,
I’d suggest that you follow the steps mentioned below and check for issue resolution.
Also, I would suggest you reseat a few components, like memory, hard drive and optical drive and see if that makes a difference. In the link below punch in the system service tag or express service code and you can access the user manual for removing and reseating components.
http://dell.to/18r60nI
In addition, please check if there is a display on the external monitor.