Sudden system death

[SirRoderick]

So out of the blue today I had a crash on my gaming system. Suddenly I had no signal to monitors, no responsiveness at all. I reboot the thing, it worked fine for about half an hour, then did the same. Instead, it did no longer power on. At all, no reaction to the power button at all. I can still see juice getting to the CPU cooler LEDs and an LED on the MOBO itself lights up but that is it, not so much as a fan starting a spin.

 

I tried reseating every connector, RAM and GPU as well as resetting CMOS through the battery but nothing made a difference. Power from the wall is fine. So I am thinking either the PSU or the Mobo just...well had a heart attack and died. Is there any way I could figure out which part is causing this without actually strapping a different PSU to the system? 

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What are your temperatures? Plug the system directly into a wall socket.

[deWaardt]

It kinda sounds like the PSU to me.

Do you have another PSU to try with?

[PlayStation 2]

PSU or motherboard died.

[IPickle]

Have you tried fully pushing in the PSU connectors in. I've had this issue before and sounds exactly like it.

[MrChavelo]

To check if your PSU is dead, remove the PSU from the tower and put a paper clip or any metallic wire from the green wire to any black wire, then power it on. If the fan starts spinning it's not your PSU.

[deWaardt]

To check if your PSU is dead, remove the PSU from the tower and put a paper clip or any metallic wire from the green wire to any black wire, then power it on. If the fan starts spinning it's not your PSU.

I won't recommend this.

Did the same trick with my PSU, it turned on fine, but it still didn't work in my PC. Testing it with a PSU tester, the 3.3v appeared to be dead.

This trick doesn't really give a good representation of whether a PSU works or not.

[SirRoderick]

What are your temperatures? Plug the system directly into a wall socket.

Room temperature mate, it's off. Tried the socket.

 

It kinda sounds like the PSU to me.

Do you have another PSU to try with?

 

Not here, but I've roped in a friend to let me tear one from his system to try. That is after the weekend though

Have you tried fully pushing in the PSU connectors in. I've had this issue before and sounds exactly like it.

 

Have tried since you mentioned but that was not it. It had been sitting like that for a year or so, would have been a bit odd I guess

To check if your PSU is dead, remove the PSU from the tower and put a paper clip or any metallic wire from the green wire to any black wire, then power it on. If the fan starts spinning it's not your PSU.

I WOULD do that if I had any electrical experience or could actually see what colour the cables are (all black). Thanks for the suggestion though.