K95 RGB K95 Press "Q" - Sticky Key problem

Greeting,



I have a K95 was working fine but a few months and now when I press "Q". it will show "eiopqrtuwy[]\" and turn on all the light of the keyboard.

I have uninstalled and reinstalled all the driver, firmware, etc.

Rebooted , unplugged. Same result.

Any idea what should I do next??

Thank you.



Actually it happens once when I bought it about a week, then I replaced the old keyboard until I take it to the service. Before I take it to the service center , the problem disappeared when I tested it once again. but it happens again now