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HP pavilion monitor issue

HP Recommended
Pavilion 21AIO
Microsoft Windows 7 (32-bit)

About a All in one PC. Model Pavilion 21. A snag in the monitor. The lower two third of the screen is obscured by vertical lines and not accessible using mouse. Is it a monitor problem or any other issue and if so any suggestions to recover it. Incidentally I tried to reset the BIOS for 'legacy boot', but the four digit code is now masked by the faulty section of monitor. So I am unable to boot windows.  This can potentially forbid me from connecting a second monitor through the USB port using a  usb to vga adapter. Any help is appreciated.

HP Support Agent
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HP Recommended



I reviewed your post and I understand that you are facing issues with the display on your computer.


Don’t worry, I assure you I will try my best to get this sorted.


Based on your description, it looks like the display issue is there in the BIOS screen as well which confirms a hardware issue.


I recommend you contact support and check the available service options for your computer.


Here is how you can get in touch with support.


1)Click on this link –

2)Select the product type.

3)Enter the serial number of your device or select let HP detect your product option.

4)Select the country from the drop-down.

5)You should see the HP phone support number or Chat option listed.


Let me know how it goes and you have a great day!


P.S: Welcome to the HP Support Community 😊


If you wish to show appreciation for my efforts, mark my post as Accept as Solution. Your feedback counts!



Stay Home – Stay Safe

I am an HP Employee

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