Thunderstorm interference and static noise in headphones and speakers

Hey everyone!
I’ve run into a bit of a weird one here. We had a massive thunderstorm roll through yesterday, and I heard this sharp little "tick" sound—that’s the best way I can describe it—coming from near my computer setup. The crazy thing is, the PC itself was totally powered down; I have a surge protector plugged in, and I even flipped the breaker at the wall. I also made sure to unplug the router from the machine. The surge protector was technically "off" via its own switch and the breaker was tripped, but it was still physically plugged into the outlet.

Fast forward to now. Once the storm blew over, I decided to power everything back up to see if any of my gear had finally kicked the bucket. Well, I noticed something funky: whenever I plug my headphones or speakers into one of the jacks on my sound card (I'm running a Creative Sound Blaster, DSX 7.1), there’s this constant interference. It's super noticeable in the headphones, especially in the right ear. But, get this—if I plug those same headphones into the motherboard jack or straight into my phone, they work perfectly fine! Also, when I hook my speakers up to the sound card, I get this annoying buzzing noise every time I move my mouse. 🤔

Does anyone have a clue what might be causing this or how I might be able to fix it?

Too much voltage fried the speaker(s). They're on their way to the scrap heap—functional, technically, but basically dead. I once had a surge take out my entire PC, two TVs, the fridge, and even the water heater... So, honestly, just smile and go grab some new ones. When you look at what happened to me versus what you're dealing with, it’s like I was dining at a Marriott while you were grabbing a quick bite at a roadside taco stand😁.