Power switch Aurora R1.

OK, after all upgrades and doing a 48 hour stress test on the system I had my daughter move it back into the computer 3d printer room. Now it will not power on.  If you hold the monetary contact on the PSU it comes on. So is it the front switch or the Mobo board now. I think it's the switch. Please confirm that the heavy red/black wire pair going to the Mobo board is for the power on switch.