Screen is not fully Illuminating

[AnneEdgware]

I have had this computer 3 months and  the screen has started not illuminating fully causing a vertical shadow down the screen.   Please help.

[praveen196]

@AnneEdgware Welcome to HP Community!

Please provide the product number.

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[AnneEdgware]

Model 

Pavilion 24Xa0023NA

Product Id

6WN29EA#ABU

SeriaL no

[EDIT]

[praveen196]

@AnneEdgware

Thank you for the update.

I recommend you attempt to access the BIOS screen by tapping on F10 while the computer is restarting, 

If the issue persists in the BIOS screen which is outside windows, it would confirm a hardware failure and you will need to Contact HP to replace or repair the LCD, 
 

However, if it doesn't show up in the BIOS, it would confirm a software issue and we'll need to reinstall or update the display drivers using the Official HP Website: Click here. 

Have  a nice day!!