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why does my desktop just shut off?

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snaik95899

Give the insides of the case a good cleaning. Use a vacuum with a clean brush attachment, NOT compressed air. With compressed air you are just blowing the dust onto other components or around the inside of the case that could short things out. Check the cooling fan(s)and vents to make sure they are working and dust free. If this doesn't solve the problem, then it is most likely the power supply.