howdy, last week i purchased this CA-02A-KK, just got round to fitting it today into my PC, now installed there is no power what so ever, i changed the fuse, nothing, changed power cord for a brand new 1 out bag, nothing, i unplugged all cables then plugged them back in and still nothing. both motherboard plugs are firmly in as is PCI-E and CPU cable, checked power switch on PSU on and off but no power what so ever, any 1 got any ideas on what i could check, all info well appreciated.