Corsair Vengeance K70 (non RGB) Backlight buttons not working

[Christianm]

Hello, My two year old Corsair Vengeance K70 (non RGB) backlight stopped working because four keys "backlight programme key, brightness key, windows lock key and mute key" stopped working. I barely used backlight and that's why i noticed that issue a month ago. so is that a hardware issue or what?. thanks

[Billy_Mays]

Does it still have warranty?

[Guest]

If it's under warranty, RMA it.

[Christianm]

no, no warranty

[Corsair Joseph]

That's unfortunate the KB does not have warranty? 

 

We can probably try a soft reset and see if it will bring those LEDs back to life

- Ensure the BIOS switch is in the (1) position 
- Unplug the keyboard 
- Hold ESC, and insert the USB with the keyboard logo into a USB 3.0 port

- Release ESC after 5 sec

[Christianm]

18 hours ago, Corsair Joseph said:

That's unfortunate the KB does not have warranty? 

 

We can probably try a soft reset and see if it will bring those LEDs back to life

- Ensure the BIOS switch is in the (1) position 
- Unplug the keyboard 
- Hold ESC, and insert the USB with the keyboard logo into a USB 3.0 port

- Release ESC after 5 sec

thanks for the reply. well I followed the instructions and the backlight are ON but now I cannot turn them OFF because those four keys are still not working. is there any way I can turn the backlights off? thanks