Weird noise coming from laptop
İt’s been like 3 or 4 months since I get the laptop. İt’s an Asus Tuf 505gd and recently while I was playing Divinity Original Sin 2 the battery started to drain for some reason. I didn’t understand the issue since I’ve played games like Rise of the Tomb Raider or Darksiders 3 or whatnot and it didn’t drain as much as the Divinity caused. I thought it was okay maybe it’s because it needed to be cleaned so the pc is using more power . Anyway when I closed to pc like ten minutes ago, there was a slight noise coming from the back of the laptop while plugged in, when I plug it off there’s no noise.And then I opened it again to see if it continues but everything seemed normal and fans started to work so I couldn’t be sure if the noise was still there, changed to the silent mode and didn’t really hear anything.
My question is, should I be worried or is it normal ?
I’m thinking maybe it’s something like coil whine but I couldn’t be sure since it makes the noise when it’s off and it stops when I unplug it. And I don’t think it’s a sign of a failing battery because it charges just fine if I’m not playing demanding games.