CORSAIR K63 Keyboard 6 digit pin not getting accepted by PC

[K63fan]

Hi,

I have been using my Corsair K63 keyboard for 5 years now. I have never had any problem with the the wireless connectivity of the keyboard. For the past 10 days I have not been able to wirelessly connect the keyboard to my PC. The Bluetooth blue light flashes on the keyboard, the keyboard shows up on the PC but when I type the 6 digit pin the pin is not accepted by the PC. 

I have tried resetting the keyboard by turning off the keyboard, holding down the Esc key, turning back on and releasing the Esc key after 3-5 seconds. The keyboard light never flashes and I don't think the keyboard resets.

I have had no luck with any method. I have read many forum posts and watched many youtube videos but no solution seems to work for me. I have attached the screenshots for your reference.

Appreciate if you can help me. 

 

Thank you

K63 not connecting (bluetooth).pdf