explosion pc

To be fair an LED (or several) going pop due to excess current could smell a bit off and make a bit of smoke (or indeed even the current limiting resistors going could do this).

I would be inclined to say the PSU has gone, it's not outside the realms of possibility for something like a smoothing capacitor to go and the PSU to still work (albeit not as well as before) . Also capacitors tend to make more smoke/noise than other components when they go.

If this is the case you have to hope that running the PC on a PSU with a gone component hasn't damaged anything else in the system...
 
If it was the PSU, generally you'd see some green looking gunk if a capaciter blew (this has happened to me, years ago). The smell would also be much stronger with that, so taking it out the machine and smelling it away from the computer would narrow it down.

Same for the fans as others have suggested, if it was the MoBo you'd see the damage on the actual board itself, though couldn't hurt to just give it a once over with a torch to ensure you haven't missed anything.

This type of situation is something that will be very time consuming as you'll have to literally comb through the entire thing, relax, cup of tea and free up your evening to check all the parts.
 
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could work if you are feeling brave/reckless, I would take all the GPUs out and as much RAM/HDDs as you can get away with first though...
 
If you have a spare PSU I would try it, obviously take out as many expensive parts as you can first just incase it is the motherboard though.
 
What was directly below the fan, that smells the worst ? that would be where I would start, because if there was even a tiny leak, it could have blown the LED's then dripped down from there.

I'd take everything out, and smell, and check them one buy one, away from where there is any trace of smell. Good luck mate.
 
OK so replaced the power supply with the enermax gold 1500 watt, it powers on boots to post screen but then shuts off and restarts continuously.
no smoke though.
I am hoping if it was the power supply it didnt damage other components.
 
On the error poster last thing says 99 "super io initialisation"

Could the replacment power supply be faulty?
I remember symptoms like this are caused by faulty power supplies.
 
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looked up the error message and found this from a manual on the following motherboard - Asrock 970fx extreme 4.

I don't know which 1 you have but may help

"0x99 Super IO Initialization

Page 37 of the manual.

IO means anything connected to the board by any interface is not initializing.
Have you just built the system, then it is saying a device is not connected properly.
Or there is a lack of power to a device causing the IO error.

Input Output error. It cannot communicate with a part or device through its slot/ bus interface. Or due to a lack of power.

Check all the components are seated flush and level and aligned in parallel with Pci-e slots ect.

For example the weight of a graphics card can pull on a Pci-e slot.
So the contacts from the slot to the finger connections of the card don`t contact tight on one side of the Slot to the card.

Sometimes you have to unscrew and level it up. So it is more parallel with the pci-e slot"
 
According to the manual:

Code 92-99

Problem related to PCI-E devices. Please re-install PCI-E
devices or try installing them in other slots. If the problem
still exists, please remove all PCI-E devices or try using
another VGA card
Click to expand...

If you can, I'd say to rig a quick and dirty cpu only loop and try an old GPU in there.

After 4 RMA's, I'd also say that it's time for a different mobo tbh. How on earth does it cost £160 to send a board back btw?
 
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