Hi @Jack F
Try going into Device Manager and Right click > Uninstall the driver for your mouse. When you restart your computer, try either plugging in the Razer mouse to have it re-download the driver or find the driver from the Razer website.
https://mysupport.razer.com/app/answers/detail/a_id/3749/~/razer-viper-mini-%7C-rz01-03050-support
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If this is helpful please accept answer.