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LS100 - stopped working

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Any advice welcome!


I'm on my second LS100, now - first one died after two months and was replaced by Amazon with no issues back at the beginning of 2020.


My second one had worked flawlessly... until last month.


I noticed that the video lighting had stopped working. Approx 15% of the first strip was lit, but all else blank.


I tried the following things:


1. Changed the setup to channel 2 physically and in iCue

1a. Tried different effects on both channels

2. Changed the order of the strips

3. Forced firmware on the controller

4. (obviously) turned them off and on again(!)

5. Uninstalled and reinstalled iCue

6. Tried a different PSU with the same output characteristics as the OEM one

7. Tried a different USB input

8. Tried a different USB lead

9. Checked that the strips seem to work fine when added to my internal setup


Nothing worked and I'm outta ideas!


Could it be that the controller has failed? I'm out of warranty now, so have no return recourse.



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  • Corsair Employees

Did you perform a clean install of iCUE?


Open your computer's Control Panel.

Open the Programs and Features options.

Select iCUE in the list, and then select Uninstall.

Open your Start menu and type "Run". Then open the Run option.

Type Regedit and then click OK.

Navigate to HKEY_CURRENT_USER\Software\

Right-click and delete the Corsair folder.


Right-click and delete the Corsair folder.

Restart your computer.

Download a new installer file for iCUE from Corsair.com and reinstall.


Afterward, perform a forced firmware flash on the product through iCUE.


If this does not rectify the issue please reach out to our support staff by opening a ticket at https://help.corsair.com

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Cheers for that; did all of your steps and still no joy... time to ticket...


EDIT: no section for the LS100 / ambient lighting. The chatbot doesn't recognise the device. How the hell do I open a ticket?!

Edited by itsthebloke
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