Gaming PC stopped working after a failed overclock

[YAYLMAO]

So earlier today I decided to overclock my gtx 770. I've never had any experience overclocking and I referenced to JayzTwoCents OCing video he made 10 months ago as of right now. From the limited knowledge of overclocking I knew, I just expected my PC to crash if it wasn't able to handle my OC. But it didn't. Instead, it ran valley benchmark for about 20 minutes. During the last three minutes before my PC died, I started to smell some kind of burning smell that got stronger over time. I opened up my PC (while it was on) to see if there was anything burning. Since I didn't see anything burning I started to smell the GPU and CPU but the burning smell wasn't coming from them. So now I'm almost certain the smell was coming from the PSU. If not then it was coming from the fan in my room... lol. So anyway, while I was inspecting the parts, I *might* have heard a pop sound (I'm not certain because I had headphones on) and the PC shut down as well. I just assumed the GPU overheated because of the OC and decided to let it cool and then come back and quickly change the clock back to stock. However when I came back, the PC would not turn on. The mobo and case lights up but whenever I press the power button, nothing happens. The fans don't even move. So now I know I have to replace something, I just don't know if it's the power supply or the motherboard. from what I see, the motherboard is receiving power, but still won't turn on. Also, I need a reply ASAP. There's a 600w 80+ bronze PSU on sale for $35 on best buy right now.

 

[Lutfij]

1| The first order of business is to determine which part is the culprit and remove it from the equation. To do this you're going to have to breadboard your system.
2| Can you please pass on your full system's specs inclusive of your chassis?
3| The point about overclocking is you gradually go through the settings one by one and make sure that you're thermally sound since any amount of power delivered will have heat as by product. To me it looks like you didn't or don't have proper airflow in your case or one or more of your components were drawing more power than they should have(naturally since overclocking requires more power input).

 

[Tradesman1]

Try unplugging the rig and reset the CMOS, then plug back in and try