Strange noise coming from my PC?!

Hey, so about 7 or 8 months ago I put together a custom rig, picking up parts one by one until I had a full build: an Intel Core i7-3770K, a RADEON HD 7770, 8GB of Corsair Vengeance LPX, and a 550W PSU. Everything ran perfectly fine for maybe 3 or 4 months after I finished it, but then out of nowhere, whenever I boot it up, this insane buzzing starts—like, loud, obnoxious buzzing, almost sounds like something is physically catching on something. To make matters worse, that red warning light next to the green one on the case, right by the power button, starts flickering too. Basically, the buzzing kicks in regardless of whether it was just sleeping or totally shut down, and it slowly dies down until, after maybe five minutes, things quiet back down to a normal level. What the hell is going wrong here? Is there any way to fix this or even just tone down the overall noise? This thing is way too loud, probably due to the components, but if anyone actually knows how to deal with this, let me know 🤔

First off, crack open the case and make sure there isn't some random cable messing with a fan.

It’s pretty standard for the fans to spin up to full speed when you hit the power button, but that should only last maybe ten seconds before they settle down. If you want to find the culprit, just manually hold each fan still for a second—maybe stick a finger in the center—and you'll hear which one is actually making the noise.

fadedorca66 said:First off, pop the case open and make sure there isn't some random cable slapping against a fan.

It’s totally normal for your fans to ramp up to full speed right when you hit the power button, but that should only last about ten seconds before they settle down. Just hold each fan still for a second—you know, put a finger on the center hub to stop it from spinning—and you'll figure out which one is actually making that noise.

Thanks, I'll check it out and let you know what's up 😁