That should force Windows 10 to reinstall the drivers.Ĭheck to see if the brightness slider works. If it doesn't, head back into the Device Manager, click Action on the menu bar, and then click Scan for Hardware Changes. Windows 10 will automatically reinstall the drivers during reboot. Next, right-click your display adapter, and then click Uninstall Device. Step 1: Open the Device Manager, and then expand Display Adapters. That should take care of any corrupted files or improperly cached data related to the drivers. Still facing issues with the brightness slider? Then it’s time to reinstall the drivers for your display adapter.

Repeat for any additional adapters listed within. If new updates are found, it will automatically install them. S tep 2: Click Search Automatically for Updated Driver Software. On the menu that shows up, click Update Driver. Expand Display Adapters, and then right-click your display adapter. While Windows 10 usually installs and maintains the proper drivers for your display adapter, it’s wise to double-check. Outdated display drivers are another reason that cause the brightness slider to stop working. Finally, have a go at using the brightness slider - it should work. If available, repeat the same for any additional adapters (dedicated or integrated) listed underneath the Display Adapters section. Step 4: Once again, right-click the display adapter, and then click Enable Device to reactivate it. Your screen may turn off, but it will switch back on after a couple of seconds. Step 3: On the confirmation dialog box that shows up, click Yes. Next, right-click your display adapter, and then click Disable Device. Step 2: Expand Display Adapters within the Device Manager. To do that, right-click the Start icon, and then click Device Manager. Step 1: Start by opening the Device Manager.

Disabling, and then enabling the display adapter on your computer may fix the issue. Restart Display AdapterĪt times, the display adapter on your computer can glitch out and stop the brightness slider from functioning properly. If any updates are available, install them and restart the computer. Type windows update into the Start menu and then press Enter to check for new Windows updates.

If the brightness slider isn’t working due to known issues with the operating system, especially after a major feature update, then Microsoft is bound to address those immediately.

The first course of action that you need to take before doing anything else is to check for new Windows 10 updates.

Windows 10 brightness not changing