- Screen brightness is an important factor when using your Windows 10 pcs as it allows you to better assess the details of the things you are analyzing.
- Operating system settings and hardware issues can make your PC screen darken more than it should, so follow the steps below in case it happens to you.
- This article is part of a much larger dedicated center for troubleshooting PC screen issues, so be sure to bookmark it in case you notice something similar again.
- For more great troubleshooting guides, be sure to visit our dedicated Fix page.
It's not every day that you turn on your computer or laptop and everything is fine. Sometimes the startup process may not resume, other times, especially after a power outage, it may refuse to boot.
You might also have times when your screen brightness is too low even 100%, or your laptop screen is dim or too dark at full brightness.
If you just installed Windows 10 and the screen does not have the brightness level you want, sometimes the problem could be an outdated graphics driver or the adaptive brightness function does not work properly.
When your computer screen is dim or the brightness is too low to 100 percent or full brightness, and you have probably tried to restart your computer or install all updates and nothing changes, you can try other solutions described in this article.
How do I repair a computer screen that is too dark at full brightness?
- Uninstall and reinstall the display driver
- Disable adaptive brightness
- Replace LCD inverter
- Roll back the display driver
- Update the BIOS
- Perform a full reset
- Check the screen before Windows opens
1. Uninstall and reinstall the display driver
- Click Display Controller / Adapter
- Select the name of your display controller, eg. NVidia
- Click Uninstall
- Confirm that you want to continue with the uninstallation
- Once the driver files have been uninstalled, restart your computer to automatically install the generic display driver
Windows can't find and download new drivers? Don't worry, we have you covered.
Driver files must be uninstalled before upgrading to newer drivers, or when removing an older graphics card and replacing it with a new one.
Be aware that updating your drivers can be a risky procedure. If you are not careful, you can cause permanent damage to your system by downloading and installing the wrong driver versions.
To avoid that, we highly recommend TweakBit Driver Updater (approved by Microsoft and Norton) to automatically download all outdated drivers to your PC.
Disclaimer: some features of this tool are not free.
2. Turn off adaptive brightness
- Click Start and type Calibrate display color in the search box
- Click on Calibrate display color search results
- In Screen color calibrationclick next to open the Set basic color settings screen, then click Next again
- A new window "How to adjust gammaIt will open, click Next. Adjust gamma The window opens.
- Set the color settings to your preference.
- Sliding up increases the brightness, while sliding down decreases it.
- press next when I finish.
- the Find the brightness and contrast controls for your screen The window opens.
- Click Skip the brightness and contrast adjustment if you don't want to adjust the brightness and contrast.
- If you want to adjust the brightness and contrast, click next open How to adjust the brightness window, then click next again.
- Use the controls on your screen to adjust the brightness until you can see clearly, then click next twice and adjust the contrast settings.
- Click next again to open the How to adjust the color balance windowand click next to proceed.
- A new window called Adjust color balance it will open so you can slide to adjust the primary colors like red, blue or green accordingly. Click next to proceed.
- Click Finish to save your settings
Yes Windows will not allow you to change the brightness of your screen, we have the ideal solutions for you.
Does this seem a little difficult? Take a look at these amazing screen calibration tools that will make your life easier.
3. Replace the LCD inverter
Sometimes when your computer screen is dim, or the screen brightness is too low, even 100%, and / or the laptop screen is too dark at full brightness, it is most likely caused by a low voltage on the LCD inverter.
This component is responsible for producing the backlight of your computer screen. In such cases, then, you may have to replace the inverter.
4. Roll back the display driver
- The right button of the mouse Start
- Select Device administrator
- Select Display adapters and click to expand the list, then choose NVidia card.
- Right-click on the card, and then select Properties.
- In Properties, select the Driver tongue
- Select Roll Back Driver, then follow the prompts
Note: If the back button is dimmed or unavailable, that means there is no controller to back up to. Visit your computer manufacturer's website to download the latest driver.
If you are sure that the problem is the latest driver and you can undo it, to avoid future problems, please refer to this step-by-step guide to help you block Windows 10 of the automatic update of certain drivers.
5. Update the BIOS
- Find your current BIOS version number by clicking Start and then typing msinfo32.exe in the search box. Click msinfo32.exe from the results list
- At System information window look BIOS version / date (your current BIOS version) and write it down on paper
- Click Start and then type exe in the search box.
- Click msinfo32.exe from the results list
- At System information window look Processor input and write it down on the paper.
- Make sure that the BIOS you are about to install is designed for use with your specific computer processor.
- Check for and download BIOS updates from your computer manufacturer's website, and find the product page for your computer model. Select the operating system and click Submit. If a BIOS category appears, select BIOS, then choose the correct one for your processor and follow the on-screen instructions
Note: Be sure to read the overview and system requirements to confirm that the BIOS update is for your computer, then click Download and save it to the desired location. Do not select Run BIOS update on network.
- Install the BIOS update, which will take a few minutes, during which time the computer may beep or the screen goes blank, the cooling fans will turn on and off, and the power button will blink; this is normal and expected. DO NOT shutdown or restart until the update is complete.
- Close all open programs before and disable your antivirus (enable it after installation).
- Find and double-click the BIOS file to begin installation, and then follow the on-screen prompts.
- Wait for the installation to complete and restart your computer.
There are cases when an outdated BIOS makes your computer screen weak, or the screen brightness is too low even 100% and / or the laptop screen is too dark at full brightness.
Before you start updating the BIOS, write down the product number of your computer, have an Internet connection and a pen and paper ready.
Does updating the BIOS seem scary? Make things easier with the help of this handy guide that offers more information.
6. Perform a full reset
For the computer with a removable battery, turn off the computer and remove all attached devices, disconnect all attached external peripherals, and then disconnect the computer's power adapter.
- Remove the battery from its compartment, and then press and hold the power button on your computer for about 15 seconds to drain any residual electrical charge from your capacitors.
- Insert the battery and power adapter into the computer, but do not connect any other devices yet
- Press the Power button to turn on your computer. You will see the start menu open, so use the arrow keys to select Start Windows Usually and press Enter
- Now you can reconnect the devices one at a time and you're done. Remember to run Windows Update and update all device drivers.
For a computer with a sealed or non-removable battery, do not attempt to remove it, as this may void your warranty. Do the following instead:
- Turn off the computer and remove any attached devices or peripherals, and disconnect the power adapter from the computer.
- Most laptops can be reset by pressing and holding the power button for 15 seconds. Do this, then plug the power adapter back in but not to any other device.
- Press the Power button and start your computer, then select Start Windows Usually and press Enter
- Reconnect other devices and peripherals, one at a time, and run Windows Update and update all device drivers after reboot.
7. Check the screen before Windows opens
- Turn off your computer and press the power button again to start it.
- Press immediately Esc repeatedly until Start Menu sample.
- Select BIOS setup F10 and press Enter.
- When the BIOS menu open, check the Brightness of the screen
If your computer screen is dim, or the screen brightness is too low even 100% and / or the laptop screen is too dark at full brightness before Windows opens, it could indicate a hardware failure.
Does accessing the BIOS seem like a big task? Let us make things easier for you with the help of this amazing guide!
Frequently Asked Questions: Learn more about PC displays and why they sometimes dim on their own
- Why is my screen so dim even at full brightness?
Your problems could be caused by a low voltage on the LCD inverter, which is a component that regulates the backlight on your screen.
- Why does my laptop screen dim when I have a battery?
Laptops will generally enter a power saving mode when disconnected from AC power. This can be changed by navigating to Start> Settings> System> Battery and selecting Reduces screen brightness while saving battery.
- Why does my screen dim by itself between certain time intervals?
Windows 10 comes with eye protection features that involve dimming and applying color filters to your screen between certain time intervals (generally during the afternoon and evening hours).
This feature is intended to protect your eyesight for long periods of time.
Please let us know in the comments section below if any of these solutions fixed the problem. Also, leave any other questions you may have and we'll be sure to check it out.
From the editor Note: This post was originally published in February 2018 and has since been renewed and updated in April 2020 to provide freshness, precision and comprehensiveness.