Question Pc shutting down or resetting.

Nightwish

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Mar 2, 2012
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For the last couple of weeks my pc had been shutting it self down or resetting to the black start up screen with a flashing cursor in the top left corner. I only play world of warcraft on it. It's only happened once every couple of day, but I did it twice in 30 mins last night. The CPU temp 50* and the GPU was 69* at the time. It's not overclocked and everything looks connected. My psu is 650w and a website says I only need 500w.

Is there anything in particular I should be checking for, or does I seem likely to be a faulty psu?

MB is a asrock extreme 4, i7 8700k, 16gb g.skill 3200mhz, 2070 nvidia gpu and a 650w psu.
 
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