Hello, everyone - I have just assembled a new build. It will not power up. I need a suggestion to figure out if the problem is the case or the motherboard. This is a mini-itx build. The case is Linkworld LC820-01B. This case comes with a 12 volt 65 watt external, laptop-style power supply that plugs into the rear of the case just like a laptop power supply plugs into a laptop - a barrel connector. Inside, this power connection connects to a power supply component that is not like a regular ATX power supply, but is on a printed-circuit board mounted on the case. This has several capacitors and other stuff. From that comes the 20-pin and 4-pin power supply lines for the motherboard. I assume the 12-volt power supply for this external power supply unit is right, since it came with the case. It was 65 watt. The processor is an IBM 1155 3220t, with TDP of 35 watts. Lower-powered CPUs can be put in a small 1155, so I assumed the power supply might be under-powered. I ordered a 90-watt 12 volt power supply with the right size barrel - and same polarity (pos inside). The MB is an ASRock H61MV-ITX. It is 1155, mini-itx form factor. Still, same problem. Everything is connected correctly. When I press the power-on button, an external CD drive I have plugged-in spins up for a while. But no power light comes on in the front of the case, there are no POST beeps, the fan for the CPU does not spin up. No other signs of life. So, power is getting into the MB - the external CD drive is plugged into a USB socket in the rear panel of the MB. After trying a 65watt and 90watt power supply, I believe the problem cannot be the power supply cord. Can it be that I have too little load? I don't think so. I plugged in another 90mm fan and an ol-fashion floppy drive (just the power connection) to add more load - same thing: no power-up, no POST, nothing, but the CD drive will spin up when I open-then-close it yet again. So, here is the help I need: [ ] what else can I try? -assuming the MB and case are fine? [ ] is it more likely the case/power supply is bad, or the MB? --Thanks!