Get a new one under warranty.
My new Rosewill keyboard's f button keeps screwing up. Everytime i hit the f button, it triggers the Enter key to work. For example, when i'm playing league of legends, whenever i use the f key to flash, it ends up doing that and also triggers the enter key command. Therefore i'm stuck in the chat option while playing the game. It happens in every form, from typing in f in the address bar and it automatically autofills and enters the first link in my history. I'm pretty dumb about computers, so i hope i explained it ok. what can i do?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic