Well, if you're sure...get this one...it won't blow up...and get a new case while you're at it...
http://pcpartpicker.com/part/seasonic-power-supply-ssr650rm ...PSU ....this one won't blow up.
http://pcpartpicker.com/part/fractal-design-case-fdcadefr4bl ...Case ...has dust filters.
/e If you're NOT sure...post a pic of the back of the case and the inside of the case. Dust hardly ever makes things blow up...more like a screw dropped in there.
/ee Do you know the make/model of the power supply?
/eee Well I guess if the power supply was packed full of dust (like never been blown out), it could raise the temps in the power supply enough to blow it up.
This post was edited by Ghot on Jan 15 2016 02:17am