So I recently just upgraded my CPU heatsink for my i5 2500k, I was running dual channel Corsair Vengeance memory no problem. Once I completed installing the heatsink I discovered the PC would start then restart over and over again with a few second intervals between and could not get it to POST. I then had a little fiddle round swapping over memory modules to see if that would help but nothing, so I removed one module and I got it to boot however seemed unstable and would freeze on the Windows desktop. Later I removed the new heatsink to check the socket pins and I noticed one was snapped in the lower section closest to the inner rim. So really I would like to know if this one missing pin can be effecting the DDR3 controller?