my wirelss keyboard 850 stopped working although new batteries were added.

Hi Peter,

Thank you for posting, I am here to help you.

Possible cause of this is a simple battery issue, a poor connection, or outdated/corrupted drivers.

Try this step to fix the problem.

Look on the bottom of the wireless device for a Reset button. Resetting the device will disconnect and then reconnect the wireless connection. There might also be a Reset button on the USB receiver for your device.

For USB wireless devices, this might be as simple as unplugging the USB wireless receiver, waiting for about 10 seconds, and then plugging the USB wireless receiver back into the USB port. The wireless connection should be reestablished.

If your wireless device uses a Bluetooth connection, also see Fix Bluetooth problems in Windows for possible solutions.

For more details you can check this article:

Mouse and keyboard problems in Windows

https://support.microsoft.com/en-us/windows/mouse-and-keyboard-problems-in-windows-94b4ca7b-4f2f-077e-4eb4-f7b4ecdf4f61

I hope you find this information helpful. Please let us know if you have any further questions If the answer is helpful, please click "Accept Answer".

Best regards,

Jansher

If your Microsoft Wireless Keyboard 850 has stopped working even after replacing the batteries, here are a few troubleshooting steps you can try:

1. Check the USB Receiver: Ensure that the USB receiver is properly connected to your computer. Try unplugging it and plugging it back in. If possible, test it on a different USB port.
2. Re-sync the Keyboard: Sometimes, the keyboard may lose its connection with the receiver. Look for a connect button on the keyboard and the USB receiver. Press the connect button on both to re-establish the connection.
3. Interference: Make sure there are no other wireless devices nearby that could be causing interference. Move other devices away from the keyboard and receiver.
4. Check for Software Issues: Ensure that your operating system is up to date, as sometimes driver issues can cause peripherals to stop working. You may also want to check the device settings in your operating system to ensure the keyboard is recognized.
5. Test on Another Device: If possible, try using the keyboard with another computer to determine if the issue is with the keyboard itself or your computer.

If none of these steps resolve the issue, the keyboard may need to be replaced.

References:

• Bluetooth - HID - Verify keyboard key presses are received