What can cause a power supply to fail or die?

Thomas-18

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Jun 25, 2017
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Besides buying a low quality power supply what else can cause a power supply to die? I bought the Corsair (CP-9020103-NA) http://www.corsair.com/en-us/cx-series-cx650m-650-watt-80-plus-bronze-certified-modular-atx-psu-na. I know Corsair makes various different series of power supplies but is this individual power supply a good one? Please respond. Thanks.
 
Solution
The CXM is still a budget PSU, but it is OK, the TXM is the one to get really.

Age, heat, overdraw power/amps, low quality parts inside.