Question My system is damaged, but I'm unsure what exactly got fried. I need help.

Dec 16, 2021
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Hey guys. So yesterday I realized that my 1000w Corsair PSU was likely faulty, for numerous reasons, and decided to buy a 1300 EVGA PSU. When I swapped it in for the new parts it wouldn't turn on, all I heard was a click from the PSU. I made sure I had everything plugged in. Eventually it did turn on, but I heard a noise and smelled smoke, like a burnt smell coming from somewhere in the PC. I turned it off immediately and kept trying to see what the issue was. I got flustered and kept trying to get it working. Long story short, this is where I am at:
  • None of the LEDs on any of the 12 fans work.
  • The Corsair case's built-in Fan/LED Hub isn't working.
  • Some of the fans are not working.
  • The All-in-One Water Cooler for my processor won't light up properly, and the pump works on and off. The 6 fans it control still work, but only at maximum speed and I can't control their speed.
  • The All-in-One Water Cooler is controlled by a large Fan/LED Hub. This thing smells smoky.
The last thing I tried was swapping back to the old PSU, but it didn't turn on. I then swapped back to the new PSU, but within 5 seconds of getting on the BIOS screen the entire system locks up.

My guess is that the All-in-One Cooler is damaged (specifically the Hub), but not damaged enough to prevent the fans from working. I also think the case's built-in Hub also got damaged. And my big worry is that the motherboard itself and/or Intel processor got hit. I packaged everything back up. And just so you know, I bought all of this late December.

So what should I do? I don't understand how the PSU could have damaged it in the first place. The PSU was connected to a surge protector. I am currently filling out manufacturer warranty requests, because I don't know what else to do. My PC included an Intel 12700K, EVGA 3080 Ti, MSI board, and 32gb of ram, all running Windows 11
 
Dec 16, 2021
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You should verify that you did. Even if the connectors look the same, cable sets are not compatible between makes/models in the vast majority of cases.
I definitely used the new cables for the GPU, CPU and motherboard. Maybe I accidentally used the previous ribbon cables for SATA and PERF? If so would that result in this major issue
 
Dec 16, 2021
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Yes, using the wrong cables can result in catastrophic outcomes.

Disconnect all but essential components to see what may have survived.
Problem is the HUB on the all-in-one H150i water cooler got fried and smelled smoky, and that's what regulated the processor.
 

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