Can't change screen brightness, brightness is set to maximum (OMEN by HP Laptop 15-dc0xxx)

[Air1fire]

Product number: 4UG64EA#AKD

I've experienced this problems several times: screen freezes for a few seconds, then goes black for a few seconds, then it returns to normal except brightness is set to 100% and there is no way to adjust it - fn keys for brightness don't work and neither does the brightness bar in settings. When using fn keys the little prompt shows up as if brightness was changing, but it doesn't change.

What solves the problem temporarily is reinstalling GPU drivers, but then it happens again after 2-3 days. Actually what helped once was updating Windows - there was a very minor update waiting and after restart the brightness problem was fixed, again for 2-3 days.

I tried removing all GPU drivers using special software so that the new driver install is 100% clean, but again, it didn't solve the problem permanently.

I've seen a few similar topics with this problem solved, but I'm not sure the links provided in the solution are appropriate for my model; I don't want to mess things up. Any help would be appreciated.

[praveen196]

@Air1fire Welcome to HP Community!

I understand that you are unable to change the brightness.

Do not worry. I will try to fix the issue.

Please perform the below steps and check.

1) Select Start, and in the search box, enter Command Prompt. Press and hold (or right-click) Command Prompt (Desktop app) from the search results and select Run as administrator. 

2) Enter DISM.exe /Online /Cleanup-image /Restorehealth (note the spaces before each "/"). 

3) Enter sfc /scannow (note the space between "sfc" and "/"). 

Try updating the computer, this will install the latest updates -

Step 1 Windows Updates -

1) In the search box, type, and open Windows Updates.

2) Check for updates.

3) If the updates are available, click on install and restart the computer.

Step 2 Install updates using HP Support Assistant

1. In the search box, type, and open HP Support Assistant. 
2. Check for updates. 
3. If the updates are available, click on install and restart the computer.  

Note: If you do not have HP Support Assistant installed, Click here to download the same.

Keep us posted,

If you would like to thank us for our efforts to help you, 

Give us a virtual high-five by clicking the 'Thumbs Up' icon below, followed by clicking on the "Accept as solution" on this post, 

Have a great day!

[Air1fire]

Hi, thank you for replying. I did what you recommended and it fixed the problem for about 2 days, but unfortunately it happened again today. Is there anything else that can be done?

[praveen196]

@Air1fire

I understand your concerns.

Please try creating a new user account on your computer.

Go to http://hp.care/2dWJKgW  and follow the steps to create a new user account.

If the issue still persists, please perform the system reset.

Windows 10 has a reset feature that repairs your computer by reinstalling the operating system. This feature is recommended for recovery because it reinstalls Windows 10 while either preserving your personal data and customizations or removing all your personal data.

You have a choice of two methods to reset your computer.

• If Windows 10 loads correctly, see the section titled Perform a Windows 10 system reset in Windows in this document.

• If Windows 10 does not start correctly, see the section titled Perform a Windows 10 system reset through Windows Recovery Environment in this document.

Have a nice day!!

[Air1fire]

Hi, it appears the problem was fixed, again temporarily, by just switching to the guest account and then back to the main one. But I don't think this is going to be a permanent solution. I might try the reset the next time it happens.

[Riddle_Decipher]

@Air1fire Alright, take your time, perform the steps and get back to us with the results,

Good luck!