I had a gamerstorm AIO, a brand new one, but it exploded on me after a few months of use. One day while just using the pc (just normal use, nothing stressing the cpu) , i heard a loud pop, it came from the pc, but i couldnt see what caused it, a few minutes later i realised a small pool of water had appeared on my graphics card, luckily it had a backplate on it and the water didnt go into the card. Coolant was leaking from the pump/waterblock. Immediately turned off everything and removed the AIO carefully. I left the AIO to sit in the corner of my room, a few days later the thing exploded again, for some reason gases were building up in the AIO. I'm using the NH D15 now, performance is better than my AIO.