The second controller is detected on my pc and also blinks its 4 LED's but it wont work. Due to some reason i had to change my hardrive and start all over with installing the windows,and so on.On my pc with the new hardrive,I only installed one of my controllers to play single player ganes and later on,when i got the need to play a multiplayer game, I found out that connecting the second controller was just impossible. I used to play mulyiplayer games on my pc using 2 xbox 360 wired controllers which worked fine. I have looked all over the internet for a solution to this strange problem,but it seems as if I am the only one facing it.