Hi, I recently built a new computer, but have experienced a problem when trying to turn it on: the PC immediately turns off.
My motherboard comes with a built in power switch (with an LED) that glows when I connect and turn on the PSU,
however, when I click either the built in power button or the one on my case, the computer powers up for a second (The fans activate, and all the LEDs glow) but immediately shuts off.
Pressing the power button again has no affect, but If I hold it down or restart the PSU, I am able to turn the motherboard off and then back on. The problem however, repeats every time I do this. Also, when I connected the computer to a monitor, there's no video output.
I went through stickied checklist and nothing seems to apply to my situation. (I don't have a system speaker though, so I wasn't able to test for beep-codes.
So far I've tried re-inserting the CPU, applying thermal paste reconnecting everything, and testing with only the power supply connected, but nothing seems to be working.
Antec Twelve Hundred Black Steel ATX Full Tower Computer Case