Windows 10: Laptop screen brightness keeps changing randomly when not plugged in to power.

Dell Inspiron 3520 Windows 10 Screen brightness dims suddenly & briefly every few seconds, but only when on battery. No problem when plugged in to mains. Have just got a new battery as old one completely dead.Any suggestions how to resolve this welcome! Many thanks

:)

 

How to keep the same brightness as when the laptop is plugged in while on battery power?

Hi,

If the Power Options settings have been configured to reduce brightness when the laptop is plugged in, you will experience this issue.

To rectify the problem, please be guided by the steps below:

• From the desktop screen, right-click the Start button.
• Click Power Options from the menu.
• From the right pane of the Power Options window, click the
  Change plan settings link representing the power plan that is currently selected.
  Normally the Balanced (recommended) power plan is selected by default.
• Once the next window opens up, move the Adjust plan brightness slider under the
  Plugged in column to the right to increase the brightness. If you are unsure about which settings would be best for your laptop, click the
  Restore default settings for this plan link.
• Click Save changes. The Save changes button would remain disabled if you have restored the power plan settings to default.

Let us know if you need further assistance.

 

Can't adjust brightness when the power plugged or unplugged

Hi there,

• Previous status:

brightness 100%, plugged in; brightness 50%, unplugged.

When I unplugged the laptop, the brightness will decrease down to 50%. And will increase back to 100% when the laptop plugged in back automatically.

• Current status:

Always keep the last brightness setting, no matter laptop plugged in or unplugged, the brightness doesn't change.

Is there any way to fix this problem? Thanks!

 

Unable to Change Screen Brightness of Laptop


So I'm not sure how long this has been happening but for some reason, I can't change the brightness on my laptop screen. I have linked a picture and as you can see, my brightness says 0% and that I can't change it, however my actual brightness is at 100%. I have looked around everywhere and the only responses I have found don't work for me. Here's a list of everything I have tried:
- Reinstalling Display Drivers
- Rolling Back Display Drivers
- Reset Settings on UWT4
- Power and Battery Settings
(UWT4 or Ultimate Windows Tweaker 4 is a customizer for Windows 10 and I thought that might be the problem but it wasn't)

If anyone has any suggestions on how to fix this, it's greatly appreciated! Thanks! -