Inspect the laptop screen closely for any signs of physical damage, such as cracks, scratches, or dents. If you notice any damage, take note of its location and severity, as this will help determine the extent of the repair needed.

Turn on the laptop and observe the display carefully. Look for any abnormalities, such as flickering, lines, discoloration, or a completely black screen. Note down any specific patterns or behaviors observed, as these can provide valuable clues to the underlying issue.

If possible, connect the laptop to an external monitor using a VGA, HDMI, or DisplayPort cable. This will help determine if the problem lies with the laptop screen itself or with the graphics card or other internal components.

Access the laptop's display settings and adjust the brightness, contrast, and resolution settings. Sometimes, display issues can be resolved by simply recalibrating these settings or updating the graphics driver.

Sometimes, a hard reset can help resolve minor software glitches or display issues. Shut down the laptop completely, remove the battery (if removable), disconnect the power adapter, and hold down the power button for 30 seconds. Then, reinsert the battery (if applicable) and power adapter, and turn on the laptop again to see if the issue persists.

Many laptops come with built-in diagnostic tools that can help identify hardware issues, including problems with the screen. Check the laptop's user manual or manufacturer's website for instructions on how to access and run these diagnostic tools.

Before attempting any repairs or troubleshooting steps, it's essential to back up important data stored on the laptop. This ensures that your files are safe in case of unexpected issues or data loss during the repair process.