When installing my CPU into my mobo, it was easy and painless. Installing stock cooler, you have to nail 4 corners of it into the motherboard. The last nail i literally had to like push really really hard to get the nails to meet the hole in the mobo. I keep thinking to myself let me just reopen and look at the CPU to make sure its not broke but am I just being paranoid? I had to push the stock cooler like really fucking hard to meet with the nails lol.....