If individual keys don't work, it's the keyboard itself that's at fault, so just replace it. If all the keys on the keyboard are unresponsive, it is necessary to check whether the keyboard battery is charged, replace the battery can be.
The wireless keyboard is a keyboard disk body and the computer does not have a direct physical connection between the infrared or radio waves through the input information transmitted to the special receiver. To be precise, it is a Bluetooth device (e.g. wireless mouse, headset, etc.).
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Bluetooth technology has seen unprecedented adoption, with products integrating the technology ranging from cell phones to automobiles to medical devices, and users using the technology ranging from consumers to the industrial marketplace to businesses and more.
Low power, small form factor, and low-cost silicon solutions allow Bluetooth technology to be used in even the smallest of devices. See the full range of products offered by our members in the Bluetooth Product Catalog and Component Product List.
Bluetooth technology operates in the 2.4 GHz band, a license-free industrial, scientific, and medical (ISM) radio band. There is no cost to use Bluetooth technology. However, you must register with your cell phone provider to use GSM or CDMA, and there is no cost to you to use Bluetooth technology other than the cost of the device.
Baidu Encyclopedia - Wireless Keyboard