The behavior described matches a likely hardware failure of the Type Cover rather than a Windows or Surface issue, especially since another identical keyboard works fine on the same device.
Recommended steps:
- Confirm basic functionality
- Press the Caps and Fn keys a few times and check whether the LED lights turn on and off.
- If the LEDs do not light, this strongly indicates a hardware issue with that specific Type Cover.
- Test in UEFI (to rule out Windows/software)
- Turn off the Surface and wait 10 seconds.
- Press and hold the Volume Up button and, at the same time, press and release the Power button.
- Keep holding Volume Up until the UEFI screen appears.
- Use the arrow keys on the Type Cover to move through the left-side menu.
- If the keys and touchpad work in UEFI but not in Windows, the issue is with Windows/software and a reinstall/reset is recommended (see “Creating and using a USB recovery drive for Surface” and “Reset this PC” in the referenced article).
- If the keys do not work in UEFI, the Type Cover itself is faulty.
- If the Type Cover is confirmed faulty
- If the LEDs do not light or the keyboard does not work in UEFI, treat it as a hardware failure.
- Submit a service order for the Type Cover:
- Sign in to the Microsoft account device service page: Microsoft account | Select device for service.
- Select the Surface device if already registered, or choose Don’t see your device? to register it.
- Use the Type Cover serial number (on the spine where it attaches to the Surface) when requested.
- Available repair/replacement options will be shown during the service request flow. If the warranty has expired, replacement options may be limited and purchasing a new keyboard might be required.
There is no documented general recall or known design defect for this model in the provided material; the official guidance is to confirm functionality as above and, if it fails those checks, treat it as a hardware failure and proceed through Microsoft’s service process.
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