Possible short?

[Degamer]

So I have a problem, my desktop PC released some smoke, smelling of burnt electronics, and shut off.  

 

I pretty much thought it was dead, but, it will actually boot up into windows, for a few seconds, before I smell heat again and it dies.

 

I've opened up the case and I can't find anything visably wrong.  No obvious shorts or burn marks.

 

My first thought was the CPU heatsink fan maybe shorted out, but it looks fine.  Not sure what else to check?

 

Any advice appreciated.

[Vandorlot]

PSU probably got destroyed. Dont turn on the PC the PSU could take other parts with it when it dies. What PSU do you have. Cheap ones often fail.

[Degamer]

PSU is a BFG GS-650.  How would I go about testing the PSU?

[wojtepanik]

you can run it dry without any gear connected by shorting pins on 24 pin connector, if it still smells, it is the psu, but it may not smell without load.

[vaiwalker]

smell the ass of the PSU. if it smells burnt, time to get a new one