Half of my keys aren't working on my Corsair Raptor K40

[RyanJohnston]

After not turning on my computer for about 3 months, my keyboard has been playing up. From the letters i,k & n to the right all work. Whereas all keys to the left of those three have all stopped working. I have opened a number of programs and games to see if it was just notepad but it seems to not work on all programs. I have updated the drivers, reinstalled the corsair program and yet it is continuing to not work. Any ideas on how to fix this issue?
Thanks
Ryan

 

[hang-the-9]

Test in another system to make sure you can rule out anything outside the keyboard as the issue. If you have that many keys out you probably need to replace the board.