Microsoft wireless multimedia keyboard types incorrectly
If your keyboard is not working then you can try the following things. You can select the start button and then select control panel. In the control panel you can select region and language options. After that you can select the regional options tab. In that you can make sure that both of the menus are selected to the region you belong to.
You can then select the customize button and then you can make sure that the measurement system is set to the system you uses in your region. Then you can select the currency then date and time and make sure that all are set to correct value. You can then select apply. After that you can check whether the keyboard is working properly.
Some times the problem may be due to the driver so make sure that you have the latest driver for keyboard installed on your computer. You can visit the website of Microsoft and download the latest version of the driver and install it on your computer. Before installing the new driver for your keyboard you should first uninstall the old driver of your keyboard from your computer. For uninstalling the old driver you can select the start button and then you can click on the control panel. From the control panel you can select the device manager.
You will then see the list of devices installed on your computer. There you will see the keyboard. You can select the keyboard and then right click and select the uninstall driver option. This will uninstall the old driver of your keyboard from your computer. After that you can restart your computer. Then you can run the installation program of your downloaded driver. You can then check whether the problem has been solved.
Another option you can try is that you can press and hold the function key and the number lock key at the same time. Then you can check whether your keyboard is working normally. You can also try to update the existing driver through device manager. For that you can select the start button and then select the control panel.
From the control panel you can select the device manger. In the device manager among the list of installed devices you will see the keyboard, you can then select the keyboard and then right click on it. Then from the available options you can select the update driver. You must be connected to the internet while trying to update. This will update your device driver for the keyboard to the latest version. You can then check whether the keyboard is working properly.
Another thing you can do is you can shut down your computer and then remove the power code from the plug then you can remove the battery from the laptop and then you can wait for some five minutes then press and hold the power button for ten second and then you can insert the battery back into the laptop. Then you can turn on your computer and then you can check whether the laptop keyboard is working properly. Sometime doing like this may solve the problem. So you can try this option also.
I had the same problem in the past and unfortunately, the most likely reason that your keyboard is acting strange is because its circuit is broken. I spilled a cup of coffee to my keyboard back then and the next morning, it gave me undesired outputs too. You might have not spilled anything to your keyboard but other stuff such as air humidity can also cause the same problem to your keyboard. Try to do the things that have been mentioned by the above poster, and if it still gives you wrong outputs, you might have to replace your keyboard.