Hi my problem is my screen thought that its in sleep mood while i using it

[umutemre]

Screen turns black suddenly and randomly when i use it. And keyboard light goes off as well. I searched internet and they saying that hall sensor is broken. What can i do?

[Max3Aj]

@umutemre, Welcome to HP Support Community. 

Thank you for posting your query, I will be glad to help you. 
Based on your description, here are the most likely causes and solutions for your issue where the screen and keyboard backlight randomly turn off:

Check for Hall Sensor Issues

• Try gently moving the screen back and forth when the issue occurs. If the display flickers or comes back, it’s likely a hall sensor or hinge-related issue.
• This may require hardware servicing. You may visit the nearest HP authorized service center, the service team will check and assist you. 
  Kindly follow this link to locate the nearest HP service center: HP® Service Center Locator - United States | HP® Support
  (Select the country from the dropdown menu and enter the city name or pincode) 

Update BIOS

• Check for a newer BIOS version that may fix the issue:
  • Go to HP Software & Driver Downloads
  • Enter your product number: 76T51AV
  • Look under the BIOS section.

Update or Reinstall Graphics Drivers

• Open Device Manager → Display adapters → Right-click your GPU → Update driver.
• Or download the latest drivers from:
  • HP Support
  • AMD or NVIDIA (depending on your GPU)

Disable Fast Startup

• Go to Control Panel → Power Options → Choose what the power buttons do → Change settings that are currently unavailable → Uncheck Turn on fast startup.

Connect to External Monitor

• This helps determine if the issue is with the internal display or the GPU.
• If the external monitor works fine, the issue is likely with the laptop screen or its connection.

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. Select "Yes" on the bottom left to say “Thanks” for helping! 

Max3Aj

HP Support