Power Surge, motherboard fried?

[Super Computing]

I not-so-smartly left my pc on formatting a HDD during a thunderstorm. Then boom, heard a faily loud pop from the pc, and it went quiet. I checked up on the pc and it was powered off. I knew the pop was from the psu, so I unplugged the power and removed the psu, then observed the motherboard for any black marks, or swollen capacitors, but none. I hooked up a different 250watt basic psu, but it refused to power on? Is my motherboard fried, could it be possible that my CPU and RAM is fried? I salvaged the parts and the GPU and HDD ended up working just fine, however my USB Wifi dongle was faulty and when running in another pc, it would starting heating up to insane temps and burning the USB port. I am not able to test the CPU and RAM. 

 

System Specs;

Core i7 870

8GB DDR3 Dual channel memory

500GB Seagate Sata HDD

GTX 1050TI

[Jurrunio]

back of the PCB? Or it could have popped the CPU instead, even the GPU, who knows.