So, what I thought was a dead tower fan was not a dead fan at all. This sucker here, the HAF 922 from Cooler Master, has a very strange flaw for the top-loading 200 mm fan. I assumed that the fan stopped working, but, turns out the design of the case (here http://www.newegg.com/Product/Product.aspx?Item=N82E16811119197 ) makes the fan rattle and buzz loudly. in fact, the blades touch the inside of the case at the top, rubbing against the metal. Clearly, this is a design flaw and the enclosure or the mesh where the fan goes is not big enough to house the fan. So naturally, I removed the top fan, but the case has a 200 mm in the front, 120 mm in the back, one for the CPU and one for the PSU, so, there is plenty of airflow, but, I can't but feel somewhat wary of it getting drastically hotter under load, like say, a PC game or an emulator like PCSX2. Others have argued that having a fan on the top affects airflow and can accumulate dust faster, so, this begs the question, is it going to be a detriment to have the top fan out of the case from here on out? Is the case just too low-grade or somehow warped to the point where the fan rattles and grinds incessantly? I never overclock my CPU, heck, I can't since it's locked, I just want to be sure there will be no lasting harm without that top fan. Or, should I get a case with better fan placement? I don't want to fry my computer.