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My keyboard just stopped working all of a sudden one morning. I have a Corsair k55 keyboard. The media keys work: pause, play, stop, next, and volume up/down and mute. But nothing else. It works when plugged in to a different computer though. Here is what I have tried. I have Windows 10

  • Deleting the 2 "HID Keyboard device" in device manager which both had yellow triangles, code 37, and searching for changes.
  • Tried a different keyboard. Same stuff
  • Tried deleting ghost versions off the hid keyboard device.
  • Went into cmd and entered "sfc /scannow" and found corrupt files and sucsessfully repaired
  • Tried to update drivers in device manager
  • Tried switching USB port.
  • Uninstalling "Corsair composite virtual input device" in device manager

What more can I try?

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  • Windows has built in keyboard drivers and most keyboards do not have separate drivers. Try a Windows 10 Repair Install: microsoft.com/en-us/software-download/windows10 Windows 10 is running, so click on the Download button (not Upgrade Button, select Run. This will launch the Repair and proceed normally.
    – John
    Jun 18, 2020 at 20:20
  • Installation media? imgur.com/a/pIYMQge
    – Simon Magnusson
    Jun 18, 2020 at 20:49
  • If you are already on V2004, choose the second choice and run in place. If you are earlier than V2004, you can still use the second choice and run in place. You can see if your computer will upgrade to V2004. But the second choice, and then select Run to launch the repair works.
    – John
    Jun 18, 2020 at 20:52
  • Just To be clear I clicked the download tool now and not update now on the link you sent, imgur.com/a/CU3Ftr6
    – Simon Magnusson
    Jun 18, 2020 at 20:58
  • You can use the second choice in your link. When you click on that. select Run (not download). If you did download, you can run Setup in the location where you downloaded. That will also run the repair
    – John
    Jun 18, 2020 at 21:00

1 Answer 1

Reset to default
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I think your windows installation is corrupted:

  1. Boot to Safe Mode (with necessary drives enabled)
    1. Run an antivirus scan
    2. Determine if the keyboard works
      • If it doesn't:
        Perform a Clean Install and check if issue resolves
      • If it does:
        System files are okay because if damaged, Safe Mode wouldn't work either
  2. Disable all unnecessary Startup programs, services, etc. via msconfig
    • Tick the box to hide Microsoft services before disabling all.
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