Hi there, my name is ***** ***** I will be assisting you today. Is this a Windows computer?
Sometimes, after changing batteries, you have to re-synch the keyboard with the keyboard USB receiver: You should be able to find a small button on the bottom of the keyboard as well as a button on the USB receiver. Press the button on the USB receiver then, within 10 seconds or so, press the button on the keyboard (you may need a pen or pencil or paperclip in order to press the button depending on its size). Try this and see if it solves your problem. If not, let me know and we will continue troubleshooting.
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Hi, this is Gary from JustAnswer: Just checking in. Did my instructions help you? Is the keyboard working now? Please let me know if you need more help. I am happy to continue.