Here’s a quick solution to your problem.
Press Start, search for Services and open the Services console (or just run services.msc):
services.msc
On the list presented to you, find the entry called Human Interface Device Service. Double-click it, make sure the Startup type is set to Automatic, click Start if the service is stopped, then OK and reboot.
What you just fixed: this service enables hot buttons on keyboards and remote controls — including the media and volume keys. Without it, Windows still receives plain keystrokes but never the extra multimedia events those keys send. (The service sits on top of the HID driver stack; Microsoft has an overview of the HID architecture if you’re curious.)
If the problem persists, also download and install the latest drivers for your keyboard from the manufacturer. For Microsoft devices, the old microsoft.com/hardware download center now redirects to the Microsoft Accessories downloads page.
Still not working? (updated 2026)
- Fn lock: many laptops ship with the Fn key set to media-key mode by default — press Fn+Esc (or the padlock icon on the Fn key) to swap the row back to F1–F12 or vice versa.
- Wireless and Bluetooth keyboards: a low battery or a stale pairing shows up exactly as dead volume keys while typing still works. Re-pair the keyboard or swap the battery before anything else.
- Vendor utilities: on Logitech, Razer and Corsair gear the media keys are mapped by the vendor’s software (Logi Options+, Synapse, iCUE). If that software was uninstalled or stopped launching at startup, the keys stop doing anything.
- Test the hardware: if the keys are dead in another OS or on another machine too, the keyboard’s media-key circuitry is probably done for.