Question PC boots then fails

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Jan 30, 2019
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I start my pc, it boots, then fails, then boots again(on its own) and then fails again and it wont let me turn it on unless I pull out the psu cable and wait 60 second,plug it back in and then it boots up normal and plays every game and does everything fine... What seems to be the problem? I have this psu 4 months and this is the first time this happened?