k95 rgb platinum I cant use the "Ñ" key.

Well, i am spanish(sorry for my english) so i use a lot the 'Ñ'....the isuee: Yesterday, all ok. 0 problems. i had this keyboard for like 1,5 year and 0 isuee. Today, the keyboard dont recognize any 'Ñ' key taps(doesn't register a hit when I press it).

+I tried:

-Use old keybord on my PC= 0 problems, i can use 'Ñ' key. So, no windows problems, i think.

-I see the keyboard configuration= its Spanish, but i still cant use 'Ñ' key.

-Use the k95 on a FRESH PC= I still cant use 'Ñ' key.

-Softreset= i still cant use 'Ñ' key.

-Change the keyboard configuration= i still cant use 'Ñ' key. Its like the key is dead....no matters the input word. Ñ, m, n, numbers, no matters. The input dont log anything.

-Reset the ICUE software and try old versiones= i still cant use 'Ñ' key.

Any tips, guys? Or i must use the RMA of my shop(PComponentes)?