See the step-by-step instructions below
Use the Windows Troubleshooter
Note: Before you proceed, ensure that your system has all the latest updates installed.
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Open your Start menu and select “Settings”.
- Go to Update & Security > Troubleshoot > Bluetooth.

- Click “Run the troubleshooter." Test if the issue has been solved.

Use the Device Manager
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Ensure that Bluetooth is enabled on both your Razer Blade and Bluetooth device.
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Connect your Bluetooth peripheral to another PC or smartphone and test it. Proceed to the next step if the Bluetooth peripheral connects to the other device.
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Update your Bluetooth drivers via “Device Manager” and select “Bluetooth”. Right-click the Bluetooth driver and select “Update Driver”.

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Finish the update process then connect the Bluetooth device to your Razer Blade. Test the devices.
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If the issue persists, go back to Device Manager then select “Bluetooth”. Right-click the Bluetooth driver and select “Uninstall Driver”.

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Click on the “Action” tab and select “Scan for Hardware Changes”.

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Your Razer Blade will search and install any available drivers. Restart your Razer Blade afterward.
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If the steps above did not resolve your issue and you have determined that the issue is with the Razer Blade, attempt to perform a system recovery or factory reset.