Acer Predator Sense Lighting Not Working: 7 Ways to Fix it

If you are using Acer Predator Sense and the built-in lighting is not working, either the keyboard backlight or Pulsar Lighting, you are not alone. The problem is encountered by countless users globally, often appearing after an update!

Lighting issues in Acer Predator Sense arise when the Lighting Service is not running or is misconfigured, Windows Dynamic Lighting is triggering conflicts, or there are bugs in the installed app version.

Before you proceed to the solutions, restart the PC, install all pending updates for Windows and Acer Predator Sense, and disable any third-party performance optimization software.

What can I do if Acer Predator Sense lighting is not working?

1. Disconnect peripherals before booting Windows

As surprising as it may sound, when keyboard backlighting is not working in Acer Predator Sense, disconnecting the keyboard, turning on the PC, and then reconnecting it after Windows fully loads fixed things. For some, doing the same with the PC mouse helped.

You could use a USB hub with a switch, connect the device/peripherals through it, and only turn it on when Windows is fully booted. This also helps when Acer Predator Sense Pulsar lighting is not working.

2. Set the Acer Lighting Service to High priority

1. Press Ctrl + Shift + Esc to open Task Manager and go to the Details tab.
2. Right-click on the Acer Lighting Service, hover the cursor over Set priority, and select High from the list of options.
3. Once done, check whether Acer Predator Sense Pulsar lighting now starts working.

3. Reconfigure the Acer Lighting Service

1. Press Windows + S to open Search, type Services in the text field, and click on the relevant result.
2. Locate the Acer Lighting Service, right-click on it, and select Properties.
3. Now, choose Automatic from the Startup type dropdown menu, and click on Start under Service status, if the service is not already running.
4. Once done, navigate to the Recovery tab.
5. Select Restart the Service under the first three options, First failure, Second failure, and Subsequent failures.
6. Finally, click Apply and OK to save the changes.

For 3 out of 5 users, running the Acer Lighting Service and configuring the recovery settings to Restart the Service after each failure fixed lighting issues in no time!

4. Disable Dynamic lighting

1. Press Windows + I to open Settings, go to Personalization from the navigation pane, and click on Dynamic lighting.
2. Disable the toggle for Use Dynamic Lighting on my devices.
3. Once done, restart the computer and verify whether the problem is resolved.

5. Repair/reset Acer Predator Sense

1. Press Windows + I to open Settings, navigate to Apps from the left pane, and click on Installed apps.
2. Locate Acer Predator Sense, click on the ellipsis next to it, and select Advanced options.
3. Click the Repair button, and check for improvements.
4. If the problem remains unresolved, click on Reset.
5. Again, click Reset in the confirmation prompt.
6. After the Acer Predator Sense app is reset, check whether the lighting settings start working.

Resetting Acer Predator Sense helps fix all issues with the app, including when lighting is not working, the dedicated button is not working, or the app fails to launch. Although the problem may return after a while, you can reset the app again or move to more concrete solutions!

6. Reinstall Acer Predator Sense

1. Press Windows + R to open Run, type appwiz.cpl in the text field, and hit Enter.
2. Select Acer Predator Sense from the list of apps, and click on Uninstall.
3. Follow the on-screen instructions to complete the process.
4. Similarly, uninstall any other Acer software, and then restart the PC.
5. Finally, download and install Acer Predator Sense from the official website. If multiple versions are listed, go for a slightly older release, one that worked fine on your computer.

When a quick removal doesn’t work, the app’s previous installation may have left behind files or Registry entries that are conflicting with the current installation or Windows. So, I recommend using a top-rated software uninstaller to wipe all traces of the app before moving to the reinstallation part!

7. Perform a system restore

1. Press Windows + S to open Search, type Create a restore point, and click on the relevant result.
2. Click the System Restore button.
3. Select the Choose a different restore point option, if available, and click Next.
4. Pick the oldest restore point from the list and click Next.
5. Verify the restore details, click Finish, and confirm the change.
6. Wait for the restore to complete. It typically takes 15-45 minutes.

If all else fails, a system restore will fix issues behind Acer Predator Sense lighting not working in Windows. Just make sure to choose a restore point created before the problem first appeared!

Lighting issues in Acer Predator Sense, be it with Pulsar lighting or keyboard backlighting, are easy to resolve, given the problem lies with the current configuration or there’s a bug in the installed app version. Your focus should be on identifying the underlying cause.

If you want to learn more about this software, we have a great guide on LCD Overdrive in Acer Predator Sense, so don’t miss it. For those who aren’t happy with this tool, check the best Acer Predator Sense alternatives, and get one today!

For any queries or to share what worked for you, drop a comment below.