chainkeep

Hi I bought this keyboard 3 years ago and never had problems, but a few months ago I had a problem that randomly the keys from F1 to F12 are pressed by themselves, including esc and tab, I had to download a program to disable these keys from windows to be able to use my computer. Has anyone else had a problem like this? I don't want to buy another keyboard, I have disassembled and reset the keyboard, but it is not solved, on another occasion I disassembled and cleaned the keyboard completely and it worked for a few days without much problem, but after pressing those keys again the problems returned PD: I have never spilled any liquid on the keyboard :[pouts: