Adjust screen brightness Windows 10

[MrStickleback]

I have a HP Spectre x360 - 13-4009na  and have just upgraded to Windows 10. The problem is I cannot alter the screen brightness using any of the usual methods.

- The fn buttons do not work

- There is no brightness control displayed on the Control panel - Power Options

- The Calibrate Display Colour method fails with an error while "... preparing to calibrate ..." - "Unspecified error".

So my display is set to high brightness and I cannot change it. Please can someone help?

Thanks, Paul.

[tOXiC1]

I too had the same problem after updating my pavillion to w10.. The problem which i found out was that the display adapter had to be updated. Go to display settings and update driver software

[JamaicanTech876]

See my posted "JamaicanTech876" on the below forum.

http://h30434.www3.hp.com/t5/TouchSmart-PC/Windows-10/m-p/5097223/highlight/true#M32659

This was how i was able to fix the issue on my PC.

[Brice2]

Omg, I had the same issue too.  I kinda tried changing it with the AMD driver (that I had to re-install after the Windows 10 update) it was pre-installed when I first got my laptop, anyway besides the point, I used it and it kinda changes your brightness, but not the same way as using your brightness control buttons to. I hope that helps much, It didnt exsctly satisfy me. But the AMD driver (if you have a laptop) is a great driver that runs your graphics really smoothly

[Burnsy]

I fixed this on my Envy 15 j151sa - 

Settings > Display > Advanced Display Settings > Display Adapter Properties

Then Properties > Driver Tab > Update Driver button.

Voila!

[Nyndy]

Thank you, that solution is really helpful

[Baustin27]

OK I went to Device Manager then expanded Monitors, after that I went to Properties on  Generic Pnp Monitor then I clicked  Enable. Thats it fully restored brightness instantly. Good Luck 

[DMSSSInc]

Thank you so much for this fix, out of all the fixes on this forum, this is the only one that worked for me.

Display bightness issue control

i had the same issue and this worked perfect.

[Brice2]

uugghhh, im having the problem again. This time the cause of it was me updating the AMD Driver to its newset version and I couldnt change my brightness so I tried to updated it, and it woulddt allow me to so then I tried down grading it and still couldnt change the brightness. so im just like my pc is becomeing a piece of crap. 2 USB ports dont work, my keyboard dosnt work, (which is kinda my fault) and I cant even run the printer on here. so its practicly internaly falling apart.

[Brice2]

i tried the other way, it worked im happy now, thnks