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The impossible problem of no display and no usb power. Try me, I tested everything.... help!!!

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Im only running CPU, GPU, PSU, MB, RAM, and the two pin powerswitch of the case
bare minimum
I get no warning beeps
but I'm thinking of testing the cpu cause the PSU, MB are new, and I swap gpu with my PC and his gpu work in my pc
reseating ram and swaping it make nothing but they work all in my pc
I can only imagine the cpu to be the problem now idk
I might have to restest it
 
I flash the bios using a usb key and the flash bios button on the mb
the flash bios led had light up
but the problem persist

also weird that the MB he had first (before I replace it with the same model but new to troubleshoot) is in my PC without any change and work good
 
Yes ATX Power
 

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Hey Peter,
I haven’t because my cou is a pain in the *** to get out, but my mother is going to bring the pc to his job and let the technician there have a quick.
I hope he going to be able to do something, but if not
Ima have to do the dirty job and take my cpu to put into the bad pc
 
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