I got a bunch of computer parts recently (that's not quite complete, but is pretty much). It's currently plugged together sitting on desk in pieces, the motherboard sitting on its cardboard box, with the following things attached: MSI AM1I motherboard, AMD Athlon 5350 CPU, Corsair Vengeance LP 8GB (2 x 4GB) DDR3-1600 Memory, and a Silverstone SST-ST30SF PSU. All of those except the PSU got returned as DOA a few weeks ago, given I was unable to get it to POST.
I have now had these returned, with the motherboard and CPU replaced under warranty, and the memory returned as working. Put everything back together on desk, and still... nothing. No beeps, no fans spinning up (the PSU fan is unlikely to; the whole system even under full load should still draw sufficiently little power it shouldn't spin up), no nothing.
The PSU didn't get send back originally because attaching the PS_ON pin (of the ATX connector) to ground did cause it to start providing enough power for the disk to spin up (though unsurprisingly the PSU fan sat there idle), so on the face of it, the PSU does at least somewhat work. Prodding the motherboard with a multimeter shows voltage over the power-on pins (though that voltage causes nothing to happen), and over the CMOS clear jumper pins, which further suggests the PSU has some life in it.
For reference, it's sitting here with the following cables plugged in:
- 24 pin ATX12V 2.x connector,
- 4 pin P4 connector,
- the CPU fan is attached to the CPUFAN1 header,
- the case's power on switch is plugged in to the power on header of the front panel jumpers (the only connection to the case!), and
- an HDMI cable to TV.
I don't think I've forgotten anything that should be needed for it to POST, and it's continuing refusal to do so is... troublesome. Any ideas?