Razer Blackwidow V4 Pro not lighting up | Razer Insider
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Question

Razer Blackwidow V4 Pro not lighting up

  • September 2, 2025
  • 1 reply
  • 121 views
A

It seems this is a somewhat common issue for this keyboard,  my previous BlackWidow had no issues lighting up as well as my other razer things. Things I’ve tried

  • Turned OFF Dynamic Lighting in Windows
  • Turned off ‘Allow the computer to turn off this device to save power’ for all Root Hub USB 3.0 under Universal Serial Bus Controllers.
  • Turned off ‘Allow the computer to turn off this device to save power’ for all USB Input Device under Human Interface Devices.
  • Turned off ‘Allow the computer to turn off this device to save power’ for Razer BlackWidow v4 Pro under Human Interface Devices.
  • Uninstalled / Reinstalled Razer Synapse multiple times.

Sometimes if I mess with the Razer Command Dial the lights will sometimes come on but not sync with Chroma. How do I fix this before I get a different keyboard?

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    1 Reply

    Razer.Aero
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    • Razer.AeroRazer Support
    • Razer Support
    • September 2, 2025

    Hi APrato84,

    I’m here to assist you. I understand you're experiencing lighting issues with your Razer BlackWidow V4 Pro. Allow me to ask a few questions to isolate the issue:

    • When did the issue start occurring?
    • Were there any incidents that happened to your device prior to the issue? e.g. spilled liquid, etc.
    • Were there any changes made to your system/device prior to the issue?
    • Are you using a USB Hub or any type of extensions to connect your keyboard to your computer?

    Let's try a few more troubleshooting to resolve the problem:
    1. Connect your keyboard directly to the PC and not a USB hub.
    2. Update the firmware of your Razer BlackWidow V4 Pro.
    3. Check if Razer Synapse is causing this issue. For now, let’s close your synapse following the instructions here.
    4. If closing Razer Synapse fixed the issue, reinstall your keyboard drivers, and perform a clean reinstall of Razer Synapse.
    5. Try using another USB-A to C cable to see if issue still occur.

    If you need further assistance, please feel free to send me a PM with your device’s serial number and proof of purchase for warranty verification. All the best!

    *Thread locked to curb the conversation to PMs

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