Dell G16 7640 Core Ultra 7 165HX RGB Keyboard Not Working Fix

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Overview
Dell Peripheral Manager
Update keyboard driver
HID service
BIOS update
FAQ

Dell G16 7640 RGB Keyboard Not Working Fix

Dell G16 7640 · Core Ultra 7 165HX · Windows 11 · RGB backlight

The Dell G16 7640 has a per-key or zone RGB keyboard controlled through Dell Peripheral Manager. When the RGB lighting stops responding or the lighting profile resets to default after every reboot, the issue is almost always a software or driver problem — not hardware.

Step 1 — Install or reinstall Dell Peripheral Manager

Download Dell Peripheral Manager from the Microsoft Store or from Dell Support. If it is already installed, uninstall it first, restart, then reinstall the latest version. Dell Peripheral Manager is the only supported way to configure and save RGB profiles on the G16 7640.

Step 2 — Update the keyboard driver

Go to Dell Support, find the G16 7640, and download the latest Dell Keyboard Device Filter or HID keyboard driver. Install it and restart. An outdated keyboard driver can cause the RGB subsystem to fail to initialize on boot even when the keys themselves work normally.

Step 3 — Restart the Human Interface Device service

Press Win + R, type services.msc, and find Human Interface Device Service. Right-click and choose Restart. This reinitializes the HID stack that the RGB controller communicates over, and can restore lighting without a reboot.

Step 4 — Update the BIOS

Visit Dell Support and install the latest BIOS for the G16 7640. Dell has released BIOS updates that fix RGB initialization issues on this model, where the keyboard backlight defaults to white on every boot despite saved profiles.

Step 5 — Reinstall the HID keyboard from Device Manager

Open Device Manager → Keyboards. Right-click the keyboard entry and choose Uninstall device. Restart and allow Windows to reinstall the keyboard driver automatically. Then reinstall Dell Peripheral Manager and reconfigure your RGB profiles from scratch.

Ahmad, Kuala Lumpur: “My G16 7640 RGB reset to white on every startup. Reinstalling Dell Peripheral Manager and updating the BIOS fixed the profile persistence issue completely.”

Frequently Asked Questions

Why does the RGB keyboard on the Dell G16 7640 reset on every reboot?

This is typically caused by Dell Peripheral Manager not saving profiles correctly, or a BIOS version that does not preserve RGB state across reboots. Update the BIOS and reinstall Dell Peripheral Manager to fix profile persistence.

Does the Dell G16 7640 have per-key RGB or zone lighting?

The G16 7640 ships with 4-zone RGB lighting on most configurations. Some higher-spec configurations include per-key RGB. Dell Peripheral Manager handles both types and allows profile creation and scheduling.

Can I use third-party RGB software on the Dell G16 7640?

Currently, Dell Peripheral Manager is the only supported application for controlling RGB on this model. Third-party tools like OpenRGB may have partial support but are not officially validated and can conflict with the HID keyboard driver.

Will disabling the RGB backlight improve battery life?

Yes, slightly. The RGB backlight draws a small but measurable amount of power. Turning it off or setting it to minimum brightness in Dell Peripheral Manager can add 15 to 30 minutes of battery life during light workloads on battery power.