Hi aboniadi,

Thank you for using the Dell Community Forum.

There seems to be problem with the LCD screen on your computer to confirm we will have to perform the ‘LCD BIST’ (Built in Self-test) on the computer. Please follow the steps mentioned below to run the “LCD BIST’.

1. Turn of the computer.
2. Press and hold down the ‘D’ key on the keyboard and press the Power button.
3. You will see different colors on the LCD screen. Please check if the vertical or horizontal lines are appearing on the screen.

If you see the vertical or horizontal lines appearing on the screen while the LCD bist is running you will have to replace the LCD.

In addition, I would advise you to connect an external display and check for the issue.

Hi,

Thank you for reaching us.

Does the laptop charge alright when its plugged in?

Can you try updating the BIOS to the latest version from www.dell.com/support .

Please try running the hardware diagnostics and check if the screen flickers even in diagnostics.

To enter diagnostics, Keep tapping F12 on the startup Dell logo that comes as soon you press the power button.

Select "Diagnostics" from the list, Run it completely and let us know if it passes, Else please reply with the Error message and validation code, we shall take it further.

Thank you.