Given the task definition and input, reply with output. In this task, you're given reviews from Amazon's products. Your task is to generate the Summary of the review.

I purchased this fan on amazon used it in a bedroom for about 4 weeks. I was extremely happy and impressed with the performance of the fan at first. Then one day with really no warning i went to turn it on and the blade did not spin. Since the fan was only one month old i decided to return it and get a refund.
Fan starts out strong but did not work after only a month