Upgrading old computer, keeping case, SATA hard drives and power supply. Vintage dell 2008.
Upgraded MB to ASRock 970M Pro3 AMD FX-8320 3.5GHz 8-Core Processor Corsair Vengeance Pro 32GB (4 x 8GB) DDR3-1866 Memory Asus GeForce GTX 750 Ti 2GB Video Card (PCIe) PC Part Picker estimates my wattage to be about 287W
Power supply rated at 300W.
Seated the motherboard, graphics card and attached the sata cables for the HDDs. Plugged in power switch and power led, but pressing power doesn't turn it on.
For grins, I switched the power switch and power led cables connected to the motherboard to see if they were mislabeled by Dell, and the power light came on, but the switch still wouldn't work.
I don't hear any fans, but I do see a light on the graphics card, and the USB speakers have a faint hum that speakers make when they know they're on, but there's nothing for them to "speak". For what it's worth, there's no burnt electrical smell. On things like electric motors you can smell the burntness, but I'm not sure if it applies when circuits get zapped.
What should I do to get this to work?