I realize this topic is old, but wondering if there has ever been a solution to this? I bought this keyboard about a year ago and its great except I've had this same issue since first usage. Should have RMA'd but I didn't and now its too late. Love the keyboard but this is terrible to deal with - often while in the middle of a game the keyboard will start flashing and unable to use it, resulting in losing matches and upsetting teammates, etc. Its not my USB ports because my CMStorm mouse has no power issues like this and neither does anything else. Only the keyboard.