I'm building my PC, and I am installing the CPU right now. I have all the sides flush, and the triangle is in the bottom left corner like it says, but I am having a little bit of trouble getting the containing handle thing back down... it's possible that I am afraid to apply too much force, or maybe I'm doing it wrong. Any experience? thanks!
Double check that the CPU is level with the bottom of the socket and feels like it's sitting properly. Then, apply the lever. Sometimes it will take quite a bit of force until you get past a certain point and then there's very little down the rest of the way until the lever is locked down.