Sice a couple of days Im facing a weird problem with some hard drives in my PC. Currently, I have 8 HDDs, one is 5Tb, the rest are 8tb, and one 10Tb. We have had several power cuts lately and suddenly, a hard drive stopped working. But if I put the disk in an external dock, it works perfectly. When I put it back in its place, it starts doing a snap sound and Windows cant start. Whatever disk I put in that power cable, does the same sound. I tried changing the data cable and it doesnt solves the problem. The 3 power cables that come from the PSU (a 1000w PSU) seems to support only one hard disk. I cant tell my boss it s a power supply problem without some strong evidence, it is a quite expensive 1000w psu as I said with only 3-4 years of use, plus a secondary PSU for the video card. What can be the problem here? I really wouldn like to reinstall windows without reason.