System would power off. I would reboot (hear a click, like hard drive or insufficent power for HD. System runs a few minutes, then power off. Now will not power on at all. Suspect power supply. Looked on-line for XPC SD31P power supply - see lots, but none look like what is running in my system .. nor has the same plugs (mine has two internal sata plugs and looks to be about 1/3 the length as what I see on line. Ideas? (besides a new system ...)