|The case has....|
Power Supply: Cooler Master RS700-PCAAE3-US 700W
Look up the model on the Coolermaster web site, or search for ads on the web that state it's warranty period ! Search the web using the model to see if there are mentions of it failing prematurely !
I have recently found some Cooler Master models have only a 1 year warranty, some are known to have premature fan failures, some are known to develop failing electrolytic capacitors.
A friend of mine had a Cooler Master model with a 1 year warranty (I found that info on the web in an ad, not on their web site). It's fan failed - merely wiggled instead of spinning - after not much more than 1 year's use. I replaced the fan after I noticed the PS was getting very hot and the fan was not spinning when I was working on it, but it was too late - the PS failed to boot his computer a short time later because of the damage that had already been done to the PS from it overheating. (It had a 600 watt capacity, his system with a Radeon HD 4850 graphics card required recommended 450 watts or more.)
There's northing wrong with Cooler Master cases without a power supply.
Don't buy an el-cheapo (in quality) PS.
See response 3 in this: