[enk0d]

i am have a question i just installed my extreme card but i wanted to open it back up to check something and i noticed that i was no longer able to unlock my keyboard is there some sort of trick to it because they say one needs to make one half turn clockwise to oepn and counter clockwise to close but the opening again is not happening any suggestions? I turned it a few times and nothing

[dracoleb]

The lock is not really a screw, just a lip that moves. If you can try pulling on it lightly while turning it.