12v ATX problem or indicator

[mjarbar]

Hello everyone,

I have had a sudden power shut down caused by either a power spike or my graphics card burning out. After replacing the fuse, power supply and graphics card I found the computer would still not start. Following the troubleshooting guide that is stickied in this sub forum I noticed that if the 12vATX cable is plugged in the computer remains a brick but if it is unplugged the system will power on and the fans spin up but of course will not boot to BIOS as ther is no power to the CPU.

Can I take this as indication that the CPU is toast or wouls it be the motherboard afterall? Is there a way to tell the difference without access to parts to try swapping in and out?

Thanks in advance for any replies.

 

[jay32267]

It could be that the the load on the 12vATX cable is pulling the voltage of the PSU down and that's why it's not booting.

I'm saying that it might be the PSU and not the CPU.

I would be checking the voltages on the PSU when it doesn't start.