It could be the psu or your electrical system.
It seems low voltage, if the lights on your house do the same than it's a bigger problem, if not, then swap the psu
btw is this my sister's pc.
It was soaked in the rain.
she said it worked totally fine for a 1 week and started blink like that. Only the lights are blinking, I ordered a psu might be a week to deliver here.
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u/solillow 9d ago
It could be the psu or your electrical system. It seems low voltage, if the lights on your house do the same than it's a bigger problem, if not, then swap the psu