Please list exact Dell model number and version of windows. Ex: Dell Inspiron 5558(5000series) windows 10
In the meantime, I would suggest removing the battery by following the steps below:
1. Press "Power On" button for 5 seconds.
2. Remove all peripherals, AC adapter, battery and then press " Power On" button for 15 seconds to release Static Flea Power. Replace battery, AC adapter. and power on system. Hopefully computer starts normally....
You'll be able to get the instructions to remove battery by entering the service tag number onto link below.After, select Manuals &Documents
Please select Inspiron 15 5000 Service Manual in the link below. I suggest reading service manual thoroughly before attempting to remove the base cover and battery.
Removing battery, pages 48 - 50:
If removing the battery doesn't work, reseat memory module from the memory-module slot - pages 24 and 25) to see if that will make any difference.
If you aren't comfortable opening the computer, I suggest contacting Dell Technical Support for further assistance in the link below:
Removing the battery won't voids the warranty unless you break anything inside the computer such as a screw.
Since you have warranty, I strongly suggest contacting Dell Technical Support or create a support request online before opening the computer base cover and battery. Please check your warranty status in link below:
I also like to suggest you follow the steps in link below to run the LCD built-in self test (BIST) tool on the system. The Dell utility should help determine if the screen abnormality you are experiencing is an inherent problem with the LCD (screen) of the computer or with the video card (GPU) and PC settings.
Note: If you do not detect any screen abnormalities in the built-in self test mode, the laptop LCD is functioning properly. Check the video card (GPU) and PC settings.
If you do notice any abnormalities in the built-in self test mode, you may get the laptop LCD repaired/replaced if it is under warranty by contacting Technical Support