Hi, a total newbie here 
I've been trying to remove my fan and heatsink (they seem to be attached to each other) from my motherboard, but I can't. From what I can figure, I'm supposed to push this metal thing down and then slide it forward. While I can push it down, I can't move it a millimeter forwards. My thumb is all blue now, so I'd rather get some advice from you guys before I continue my attempts
. So, how do I open this Fort Know lock? Am I supposed to use some kind of tool here? It looks like using a flat-end screwdriver would work, but I don't have one small enough...
In case you need the information, I've got an MSI KT3 motherboard and some kind of ineffective fan/heatsink that came with the computer (picture below).
My fan and heatsink.
Also, I'm going to replace my current cooling so-called-solution with a Papst 8412NGL fan and a PAL8045T heatsink. Is there anything special I need to know before I do that? Do I need new thermal paste or something?
I've been trying to remove my fan and heatsink (they seem to be attached to each other) from my motherboard, but I can't. From what I can figure, I'm supposed to push this metal thing down and then slide it forward. While I can push it down, I can't move it a millimeter forwards. My thumb is all blue now, so I'd rather get some advice from you guys before I continue my attempts
In case you need the information, I've got an MSI KT3 motherboard and some kind of ineffective fan/heatsink that came with the computer (picture below).
My fan and heatsink.
Also, I'm going to replace my current cooling so-called-solution with a Papst 8412NGL fan and a PAL8045T heatsink. Is there anything special I need to know before I do that? Do I need new thermal paste or something?