How to resolve DPI, button, and detection issues on a Razer mouse

Updated: 18-Jun-2025 | Answer ID: 4135
This article shows you how to fix DPI and button issues, unintended double-clicking or input spamming, scroll wheel problems, and unrecognized mouse in Razer Synapse.

This is a step-by-step guide on how to troubleshoot and fix DPI, mouse button, and other issues such as:

  • Double-clicking or input spamming

  • Scroll wheel issues

  • Mouse not recognized or detected by the system or Razer Synapse

Possible causes of these issues include:

  • Improper USB hub connections

  • Software bugs

  • Hardware-related issues such as debris buildup, dirty sensors, or faulty switches

Below are the steps to fix mouse issues.

Note: After each step, check whether your device is functioning properly or if the issue has been resolved.

  1. Connect your wired mouse directly to a PC USB port instead of a USB hub. For a wireless mouse, connect the dongle directly to a PC USB port and ensure a clear line of sight between the mouse and dongle.

  2. Update your mouse firmware.

  3. Use compressed air to gently remove dirt from under the affected buttons.

  4. Test the mouse on a different system without Razer Synapse.

  5. If your mouse supports surface calibration, reset it in Razer Synapse.

  6. Check if another application is causing the issue.

    1. Go to the system tray.

    2. Right-click the Razer icon and select “Exit All Apps”.

      System tray menu items

  7. Perform a clean re-install of Razer Synapse if the issue persists.

  8. Uninstall the mouse driver. It will automatically reinstall after the uninstallation process.

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