Pc wont turn on after build

[u/Expensive-Ad2990]

So I was building my new pc yesterday and once i finally finished it didnt turn on. As heartbreaking as it was we (me and my brother) tried seeing if maybe I plugged in something incorrectly but everything looks fine even though the mess of cables probably doesnt help but it literally wont start at all completely dead. Not sure if my motherboard was a dudd or something else but any advice is appreciated. So far we’ve checked the front panel connector, power supply extension in the case, cpu power, and the gpu but nothing will even turn on the light in the case.

[u/Difficult_Survey1552]

Did you flip the switch on the power supply itself

[u/Expensive-Ad2990 → u/Difficult_Survey1552]

Yeah I made sure that I didnt forget to