Before going forward, are there any other components that would make a POP noise due to liquid? My 1060 Ti card sits over the PS but off to the side a wee bit.
Do you possibly have a spare computer that you know works without any issues, that you could take components like your GPU, PSU, Memory DIMMs, fans, etc.....and plug in to the spare computer to "test", to see if any of the components in question will power up? With no problems....
Any liquid/mist/moisture that came in contact with any fans or got in the airflow stream of any of the fans (case fans, GPU fans, PSU fan, CPU fan, etc..) could have blown liquid/mist/moisture on to any components and/or areas of the Motherboard....
Regarding if their are any components that would make a "popping noise" due to liquid getting on them?....the first thing that comes to mind is that your Motherboard, GPU or PSU blew or popped a capacitor....
If it was my computer, I would open/remove both side panels and before completely stripping the computer down, I would perform a thorough inspection of the MB looking for any swollen or bursted/popped capacitors....(note: some PSUs have fuses in them, as well as capacitors....also, GPUs have capacitors as well)
I would also obtain a can of CRC electronics & electrical parts cleaning spray (this spray cleans on contact and quickly evaporates any and all moisture away to dry areas....
Hope this helps
TC / Johnny