Welcome to Justanswer.com, my name is ***** ***** I will do my best to assist you.
The keyboard and mouse you have, whats the full name brand and model of that keyboard and mouse?
Such as logitech K780, etc.. Thank you,
My apologies for the delay.
So I can help you with specific steps and instructions, I need you to look on the mouse and keyboard, possibly on the bottom on a sticker or maybe even under the mouse battery.. We need a model number and hopefully a name brand that way I can guide you throught the likely fixes.
Sometimes to fix the issue we need to press and hold the sync button on the USB wireless receiver, the small usb piece on the computer that receives the mouse and keyboard signal.
Other times, with Bluetooth mouse and keyboard sets, we need to press the pair button on the mouse and keyboard, and then open the bluetooth devices window on the computer and pair the computer to the device.
Its near impossible for me to be any more specific without knowing the name brand and model of the mouse / keyboard.
Dustin S.Senior Technician and Network Switching Systems Operator / Maintainer.