Given the task definition and input, reply with output. Given an Amazon review, indicate whether it is a 'Positive Review' or 'Negative Review'.

The last thing you expect is to receive a product that simply does not work. It happened with the fan of the cooler master hyper 212. It simply would not work, probably a broken wire internally. Have tried to connect it to different power outputs in my mother board, but finally realized it was burned. Now I need a new fan, probably from a computer shop nearby.<br /><br />I wonder what kind of quality control they have at Cooler Master. I had them as 5 stars supplier for cooling stuff, but now i have to give it then no stars at all!<br /><br />Another thing that needs improvement is the installation instructions. It's very confusing, too much details and small fonts and illustrations. If you are not an experienced computer guru you will spend about an hour to figure out how to assemble it.
Negative Review