I replaced my old cooler with a Hyper 212 and once I tried to boot my computer, my computer couldn't recognize my hard drive anymore in the bios. I unplugged it while I was changing the cooler because where it is, it would probably slide out as I was flipping my tower around trying to change the cooler. I tried to see if maybe I could find it using windows 10 stick and tried to see if I could install it or repair from it, but it couldn't find the hard drive when I tried to do so. I also reset my bios back to factory setting and it also did not work.