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How to figure out what exactly died in the pc?

post #1 of 6
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I was playing CS:GO with a friend today and suddenly his pc died. He told me that the computer produced a strange noise( i think something like a click) and some blue smoke which smelled really awful came out of it. Now when he tries to turn it on nothing happens but the motherboard light lights up. What do you think died in the system and is there a way to figure it out without taking it to a specialist?
post #2 of 6
A photo of the inside may help, it could be a connector from the psu that wasn't seated, it could be a blown cap, might just be the GPU , in other words dozens of possibilities, that can only be determined through testing individual components.

First thing to try is to minimise, can you get it to post with minimal hardware (using onboard graphics if possible), so no hdd's odd's etc.
    
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post #3 of 6
If you can try to test each component individually. If it was the PSU it could have taken a lot out with it, but Idk if it's that since the motherboard light is still on.
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post #4 of 6
its either one of 2 things. either a cap in the PSU blew or the motherboard is toast. the only way to know for sure is to test with a known good working PSU. if he has a spare that he knows works, then have him open up the pc and hook up the spare to only the essentials like the mainboard's 24 pin and 4 or 8 pin cpu power, and the graphics card if he has one and see if it posts. if it does the mainboard is intact. if it does NOT then hes fried his mainboard and its time to gut the pc.
     
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post #5 of 6
    The PSU can be toast and have a functioning 5VSB output, as they are totally separate circuits inside the PSU; this is what is powering that LED on the motherboard with the computer is plugged in.

    As far as smoke: Sometimes the 12v -> 1.2v bucking converter for the CPU fails on the motherboard (usually a shorted Mosfet), occasionally taking the CPU with it.
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post #6 of 6
"How to figure out what exactly died in the pc?" - when I first read this I thought: mouse. And the type for four legs & no buttons.

I agree that PSU is likely first and best to try.
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