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So i've had my hp Z2 G4 for a bit now when I plugged it in it turns on by itself it was because the power button cable was loose but it still does that even now. But when i turn it on now I get no display and it only works from the graphics card and yes it is working I used my school pc the fans spin way too fast for the boot up and i get no display then the psu fans spin faster its just really loud and im starting to think I need to get a new psu or is it the cpu or do I just need to get a new psu or cpu I have 64 gb ram i7 8700 everything works last time I checked. But now it wont work its been non fuctional for 1 week now and it has my school files and games on there.

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