Hello Stacy DeGuzman, welcome to Microsoft Q&A forum.
I understand your situation. Please follow these steps:
- First, make sure the mouse is in pairing mode.
- When the PIN prompt appears, just leave the field blank and connect anyway. It might just be a false prompt.
- If that doesn't work, try entering 0000 or 1234
- If those don't work, Go to Control Panel > Devices and Printers > Add a device. This older wizard often bypasses the PIN prompt entirely.
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