I had this terribly hard fan to put together. So Everytime I upgraded my CPU the fan would be be a pain to put back together. You'd need two people to hold it all together while another person screwed. My wife and I changed the CPU in my computer the other night and on of the screws got cross threaded on this fan assembly. I tried everything to get it apart. When I finally did, I noticed the back mount did some damage to my mobo. Now my computer won't pass post and acts as if processor is not getting power. Everything is hooked up correctly. Just need to know if the date to mobo is terminal or should I keep troubleshooting. Thanks for any help you can provide.