Computer was on for split sec, turned off and now won't power up anymore.

I built my gaming PC about a month ago and everything was running pretty good.

Today, when I tried to turn on my PC, it came on for a split second and then immediately turned off. I tried pushing the power button again, but this time it wouldn't turn on at all.

I made sure all the power cords were connected and my power strip was still receiving power. (Was able to turn on my lamp and TV at the same time on the strip.)

I unplugged my computer from the strip, plugged it into different outlet, then reset the power supply. (Flipped the switch to 0 then to 1.)

It powered up, but immediately went off again just like it did the first time.

Is it the power supply?
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  1. TheN00bBuilder said:
    What is the power supply? It probably is.

    Ultra LSP550 550-Watt Power Supply - ATX, SATA-Ready, SLI-Ready, 135mm Fan

    I Bought it off of
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