@kennyowz
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As I understand the SM-2061 Wireless Mouse(+Keyboard combo), Blinking red light and then stops working,
Don't worry as I have a few steps to help you out:
I recommend you attempt resynchronization of the device using this link: Click here
If the issue persists, the red line represents either a connection or a hardware failure and you may need to contact HP for a hardware replacement or service.
Keep me posted,
If the information I've provided was helpful,
give us some reinforcement by clicking the solution and kudos buttons,
that’ll help us and others see that we’ve got the answers!
Good Luck.
Riddle_Decipher
I am an HP Employee
Learning is a journey, not a destination.
Let's keep asking questions and growing together.