u/nueroxy

Suggestions are appreciated.

https://reddit.com/link/1u0bbm1/video/yil250i2v26h1/player

My UPS is connected to my PC, and my AC is connected to a different wall socket far away from it.

Whenever I turn on the AC, my UPS usually makes a click sound first, and then the humming/buzzing noise starts. The noise is not loud, but it is noticeable. When I turn the AC off, the UPS goes back to normal and becomes quiet again.

The UPS light stays green the whole time. My PC does not restart, the monitor does not flicker, there is no burning smell, no heat from the UPS, and no repeated clicking.

Sometimes when I turn the AC on or off, I hear a clicking noise from the UPS, but this does not happen every time. The UPS light still stays green when this happens.

Is this normal relay/transformer hum due to voltage fluctuation from the AC, or could it indicate a wiring/earthing/neutral issue? Could this damage my PC in any way?

Wanted to share this here because maybe it saves someone else from going through the same thing.

My first gaming laptop was an Acer Nitro 5 that cost me around ₹50k. After some time, it suddenly died completely. Service center said the motherboard was gone. Replacing it would’ve cost around ₹20-25k, so I ended up selling it for parts.

At the time, I thought I was just unlucky.

Then I bought my dream laptop — a Legion 5 Pro with an i9, RTX 4070, and 32GB RAM. Cost me almost ₹2 lakhs. Everything worked perfectly for around 1 to 1.5 years, and then one day it just stopped turning on.

Again. Dead motherboard.

I went to multiple service centers and nobody could explain why this had happened twice. I was genuinely losing my mind because there was no way two completely different laptops should die the exact same way.

Recently, I got a new PC built, and while talking to the guy assembling it, I casually told him this whole story about both my laptop motherboards dying. The moment I mentioned it happened twice, he immediately asked me one thing:

“Did you ever check the earthing in your room?”

Honestly, I had never even considered that possibility. He told me bad earthing or a faulty socket can slowly damage components over time, especially expensive systems.

So I finally got it checked.

And after all this time, turns out the issue was never the laptops.

It was the socket.

The earthing in my room was done badly, and apparently it slowly damaged both motherboards over time. Nobody at the service center ever suggested checking it, and honestly I never would’ve thought a wall socket could destroy two expensive gaming laptops.

So if your laptop behaves strangely while charging, randomly crashes, gives tiny shocks from the metal body, or suddenly dies for no reason, please get your home earthing checked too.

And yes, I used ChatGPT to help write this post because I didn’t want to spend 15 minutes typing the whole thing properly. Doesn’t make the story fake lmao.