Question My pc should be fully built but it wont turn on

Jun 11, 2019
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I just finished building my pc. When i plug it in only some lights on the motherboatd turn on nothing else. Then when i press the power button nothing happens. Is there a problem with one of my parts?
 
Jun 3, 2019
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Like... I don't even know how many times I've said it : NEVER CHEAP ON PSU.

dude wtf is that 400W psu ? That psu with those components will not live long at all.