everybody. I just built my own computer. This is the second time that I have done so, but last time I did so with a friend that was more knowledgeable than I am. The computer is built and everything appears to be plugged in, but when I hit the power button, the computer begins to turn on and shuts off almost instantly, then "flickers" on and off.
The fans and case lights will flash for an instant, then everything shuts down. Two to three seconds later, they will flash on again for a second or so, then back off, and so on, until I kill the power. I'm guessing that this is the fault of the power supply, perhaps due to some signal from the motherboard, but I'm not sure what is going on.
Does anybody know what sort of misconfiguration could cause this sort of thing?
Problem persists when booting using only Mobo, CPU+Fan, PSU, and single stick of RAM. It is likely not the RAM, as I have tried with multiple different sticks of RAM. That leaves Mobo, CPU+Fan, and PSU.
I'm guessing that the PSU or Mobo is faulty. Is there any way to identify which one, and/or is there any connection that could be messed up between the PSU and the Mobo/CPU that could be causing this behavior (on for an instant, off for five seconds, on for an instant, etc.)?