Hi everyone, build a new system and got it to POST and entered UEFI. It then crashed and no longer posts. I've removed the motherboard (Asrock H170 Pro4) from the case and only have the 24-pin and 8-pin mobo and CPU cables connected and only the CPU (i7 6700), CPU fan (intel) and pwr button cables plugged in, no RAM installed. According to the tom's "not POSTing" guide, I should get long beeps indicating that there's no memory installed, however I'm getting no beeps at all. When I press the pwr button, the PSU (Antec HGC 520m) and CPU fans begin to spin but then stop straight away. Do you think it's a motherboard or PSU issue? Is there any way to tell other than having to pull the PSU out of my gaming rig? (I really don't want to do this...) Given the PSU seemed to be working before the UEFI crash, would that indicate more of a mobo issue rather than PSU issue?