I recently bought a PC , and it's liquid cooled. In the first day , I added 2 hard drives and that's the only time I've opened the side panel. Earlier today , the fan that's on the radiator has become very loud. I've only had this PC for about a week. The noise never stops , and after a while (about an hour of use) it becomes even louder. I turned it off after that just in case. I haven't have an performance issues , and the CPU isn't warm.