First time my mates put a PC together himself, so ordered everything i told him to, and he put it altogether with me instructing him.
Came to the end, pressed the on switch, and nothing
Not even any lights on the mobo were coming on.
So i told him to test the PSU with the "jumping" method so he put the paper clip in and just tested it with a single fan, and the fan worked perfectly on its own.
Reconnected the whole thing, but still nothing, I'm honestly stuck on what to suggest, and unfortunately he doesnt have any spares to test anything with
Any help will be much appreciated <3
Came to the end, pressed the on switch, and nothing

Not even any lights on the mobo were coming on.
So i told him to test the PSU with the "jumping" method so he put the paper clip in and just tested it with a single fan, and the fan worked perfectly on its own.
Reconnected the whole thing, but still nothing, I'm honestly stuck on what to suggest, and unfortunately he doesnt have any spares to test anything with

Any help will be much appreciated <3