HP AIO Computer Monitor Malfunctioning

[PaulDTaylor]

When I turn my computer on the first screen display the HP logo is very distorted. When it boots up the screen shakes, is cloudy, and displays a thick purple line through the center with a purple section about four inches deep below the line. I've tried rebooting, but doesn't change. Any idea why this is happening and how I fix it myself?

[Max3Aj]

Hi @PaulDTaylor, Welcome to HP Support Community. 

Thank you for posting your query, I will be glad to help you. 

The display issue you're describing—distorted HP logo, screen shaking, cloudiness, and thick purple lines—suggests either a hardware problem with the display panel or a GPU-related issue. Here’s how you can troubleshoot and potentially fix it yourself:

Step 1: Check if it's a Hardware or Software Issue

Boot into BIOS

• Turn off the PC, then turn it back on and immediately press F10 repeatedly to enter the BIOS menu.
• If the distortion appears in BIOS, it's likely a hardware issue (faulty display or GPU). If the BIOS screen looks fine, it might be a software or driver problem.

Connect an External Monitor

• Plug in an external monitor via HDMI or VGA.
• If the external display works fine, then your All-in-One’s screen or display cable is faulty.
• If the issue appears on both screens, it could be a graphics driver or GPU issue.

Step 2: Troubleshoot Software Issues (If External Display Works Fine)

Boot into Safe Mode

• Restart and press F8 or Shift + Restart → Choose Advanced options > Startup Settings > Enable Safe Mode.
• If the screen appears normal in Safe Mode, then the issue is likely a driver conflict.

Update Graphics Drivers

• Open Device Manager (Press Win + X, then select Device Manager).
• Expand Display Adapters → Right-click on your graphics driver → Update driver.
• If the issue persists, try uninstalling the driver and reinstalling the latest one from HP’s website.

Check Windows Display Settings

• Right-click on the desktop → Select Display Settings.
• Make sure resolution is set to the recommended value.

Step 3: Fix Hardware Issues (If Distortion Appears in BIOS & External Display Works)

Check the Display Cable (Internal Ribbon Cable Issue)

• The display cable inside your All-in-One could be loose or damaged. If comfortable, open the back panel and reseat the LCD cable.

Replace the Display Panel (If Screen is Physically Damaged)

• If there's a permanent thick purple line, the LCD panel might be failing. You may need to replace the screen.

Check for GPU/Chipset Overheating

• If the problem worsens over time, the GPU might be overheating. Clean the internal cooling vents with compressed air.

I hope this helps. 

Take care and have a good day. 

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping! 

Max3Aj

HP Support