Is there an on/off for a combo of mouse+keyboard wireless control?

[IamNotreal013]

So I have this wireless keyboard and mouse set and it came together but I wanted to know if I can turn it on and off because I know on the bottom of the mouse, there is On/Off but i'm not sure on the keyboard.`Sometimes when I restart my Dell pc, the startup menu shows "keyboard error" and when I use the mouse/keyboard it won't work. And, when this happens, I can't turn on caps lock. Meaning the light won't appear, and the batteries are fine. Please, someone explain!!!!!!

[Riddle_Decipher]

@IamNotreal013 What do you mean not real? You aren't a bot, synthetic sleeve? are you? an AI? Just kidding!

please share the product number of the device you need help with, as the model you've shared isn't helping me obtain the information I need, to help you, here's what I need:

Note: Please ensure the complete product name/number for a quicker response from the community, as we need to know what we are dealing with to provide an accurate solution: 

Click here for steps on finding the information we need!

Remember: Do not share any of your personal information such as serial, phone number, email ID, etc.

Meanwhile, If you have replaceable batteries on the device, removing the battery could be the only way to turn it off, depending on which product you have.

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