Lenovo laptop screen dark

• If you have played with the display/brightness settings, then that screen might be gone. You might need to replace the screen.

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• If you shine a flashlight on the screen, can you see it better?
  

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• Yes with a flashlight we can see it much better, but if it was the back light, i would think the docking station would still work correctly with a second monitor?
  

• Do you know anything about laptop screen repair?Welcome to SW, by the way.  How long have you been in IT?

• Dan3282 wrote:

  Yes with a flashlight we can see it much better, but if it was the back light, i would think the docking station would still work correctly with a second monitor?
  

  Could be a bad motherboard not powering the inverter and not recognizing the dock.
  

• Make sure drivers are updated and not using a generic VGA driver. This would make the dock not work and not be able to adjust screen brightness. If it is to the point where you can hardly see it at all then it most likely is a bad screen. 

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• ^^^^

  What he said, Check the drivers.
  

• Is the screen dim pre-Windows? With and without being on the docking station? That would rule out drivers.The 2nd screen not being recognized could very well be drivers.

• We have had heaps of these with the X240 touch. Most of the time it is the LCD cable, Lenovo have redesigned the cable so that it now has a clip to hold it in place.

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• thanks, we had support on this device, so we are having the lcd screen replaced today.  I will reply back later and hope this solves the issue.  Nothing but problems with this 240 since we got it.  thanks

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• i Have the same problem with my x240, Changed the screen cable and flex too but no gain, it displays fine on external screen tho, the Lenovo ThinkPad logo shows very dim when switched on, i don't believe there is an issue with the drivers, i also changed the power adapters both 45w and 65w but didn't work, looks like there is a problem with Motherboard Display adapter which is onboard.

• You can increase lenovo laptop dim light screen issues by just turning off adaptive brightness and updating your display graphic drivers or by uninstalling and reinstalling them.
• You can also modify the registry editor and change the value of FeatureTestControl to f048 and reboot your computer.

If you are using a Lenovo laptop and sometimes you may experience a very irritating issue, the screen of your laptop goes very dim or screen flickering issues on lenovo. It happens because you may accidentally click a wrong button or key or you may just finish updating your windows operating system. If brightness of laptop is low it effects your eyes when you see things on screen. But you no need to worry there are some methods or steps that can help you to fix your screen dim light on laptop.

If the laptop screen is dimming and it is due to hardware or software problems you need to replace it with a new lenovo screen LCD and try adjusting brightness of your screen. In case if it is hardware you have to take your laptop to repair centre or contact for support team. If it is software you can solve on your own by using the below steps.

Some laptops are designed in a way that some sensors are placed and it will check the ambient light in a room. If suddenly light changes in a room then automatically sensors think it changed and it will adjust the brightness of the screen. This feature is called adaptive brightness. Sometimes it is responsible for the light dim to set the following below steps.

Step 1: First open control panel, go for hardware and sound. In that choose power options.

Step 2: Tap on change plan settings, next go for the current power plan.

Step 3: Now, hit on change advanced settings and expand display, then enable adaptive brightness.

Step 4: And now turn off both battery and plugged in states. Click on Ok.

If your laptop light is dim then the fault is graphics driver you need to uninstall or reinstall graphics display drivers and you need to update the graphics driver to the latest version or roll back graphic drivers . But you don’t have any patience, time and skills to deal with drivers. Since it is very time consuming and hard then we recommend to use driver easy. Driver easy will automatically recognize your system and find the correct drive for it.

You don’t need to take risks while downloading and installing the wrong driver, exactly what system your computer is running and no need to worry about making a mistake when installing. You can update drivers with free or pro version Driver easy.

Step 1: Download and install driver easy.

Step 2: Run driver easy software and perform scan by clicking on the scan now button [it will scan your computer and detect your problem driver] and all outdated softwares on your windows 10 laptop.

Step 3: Click on the update button for automatic download of the correct driver easy version.

When Laptop Starting Press Brightness UP Key

Step 1: Completely shutdown your Lenovo laptop. After that, press the power button to start up your laptop. In that, press and hold the brightness up key on the keyboard, which is usually a function key[F1- F12] on your Lenovo Laptop or any other laptop the brightness key may vary..

Step 2: After starting up, you can see the screen of your laptop has been brightened up.

Also Read: 1] How to fix Graphics card not detected in windows 10

2] Windows 10 Black Screen on Startup Fix

3] Windows 10 Blue Screen of Death

4] How to Boot Lenovo Laptop From USB Windows 10

5] How to Enter boot menu in Lenovo Laptops

Modify Registry to Increase Brightness FeatureTestControl

You can change a registry value to solve your dim screen issue. Be sure that registry is very risky, if any misoperation is done it can bring unexpected problems. Before going ahead we strongly recommend that you backup your registry. Ensure that you need to update your graphics driver before you are going to perform this method.

Step 1: To open the run dialog, press WIN and R keys on your keyboard at same time. After opening, type regedit and click on Enter. Then it will open the Registry editor.

Step 2: In the Registry editor, to navigate the location as below carefully

Step 3: HKEY_LOCAL_MACHINE-> System -> ControlSet001->Control

Step 4: Under Control -> Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0000

Step 5: CLick on 0000 -> On the right hand side pane -> Click on @FeaturetTestControl.

Step 6: After that change data value to F048 and click on Ok.

Finally close the Registry editor. Reboot your laptop and check if the problem resolves or not.

If the above method will not bring your laptop back to normal, then you have to consider the issue with hardware and contact Lenovo official support team. If they offer any further assistance.